Hi again,
after coming back to the initial situation (fresh check out of the
repo) the problems
with my dispatcher seed site are obviously reproduced. When executing
"$ forrest run"
the console displays the following errors:

[... SNIP...]

fetch-plugins-descriptors:
Copying 1 file to /tmp/prova/build/tmp
Copying 1 file to /tmp/prova/build/tmp
Fetching plugins descriptor: http://forrest.apache.org/plugins/plugins.xml
Getting: http://forrest.apache.org/plugins/plugins.xml
To: /tmp/prova/build/tmp/plugins-1.xml
local file date : Thu Aug 05 11:27:45 CEST 2010
Error getting http://forrest.apache.org/plugins/plugins.xml to
/tmp/prova/build/tmp/plugins-1.xml
Fetching plugins descriptor:
http://forrest.apache.org/plugins/whiteboard-plugins.xml
Getting: http://forrest.apache.org/plugins/whiteboard-plugins.xml
To: /tmp/prova/build/tmp/plugins-2.xml
local file date : Thu Aug 05 11:31:47 CEST 2010
Error getting http://forrest.apache.org/plugins/whiteboard-plugins.xml
to /tmp/prova/build/tmp/plugins-2.xml
Plugin list loaded from http://forrest.apache.org/plugins/plugins.xml.
Plugin list loaded from
http://forrest.apache.org/plugins/whiteboard-plugins.xml.

[... SNIP...]

but execution is not stopped. Looking at the build/webappWEB_INF/logs
directory I can see the following files
containing errors: core.log, error.log and sitemap.log.

Te contents of core.log file are:

WARN    (2010-08-05) 12:20.00:673   [core.language.java] (Unknown-URI)
Unknown-Thread/JavaLanguage: Attempted to retrieve dire
ctory listing of non-directory /usr/java/packages/lib/ext
ERROR   (2010-08-05) 12:20.10:131   [access] (/)
PoolThread-4/CocoonServlet: Internal Cocoon Problem
org.apache.cocoon.ProcessingException: Failed to load sitemap from
file:///opt/forrest_trunk/build/plugins/org.apache.forrest.
plugin.internal.dispatcher/internal.xmap
        at [ConfigurationException] -
file:///opt/forrest_trunk/build/plugins/org.apache.forrest.plugin.internal.dispatcher/in
ternal.xmap:65:80
        at <map:mount> - file:///tmp/prova/build/tmp/internal.xmap:21:158
        at <map:mount> -
file:///opt/forrest_trunk/main/webapp/sitemap.xmap:368:118
        at 
org.apache.cocoon.components.treeprocessor.DefaultTreeBuilder.build(DefaultTreeBuilder.java:374)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.buildConcreteProcessor(TreeProcessor.java:341)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.setupConcreteProcessor(TreeProcessor.java:306)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:252)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:118)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.ja
va:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.SelectNode.invoke(SelectNode.java:98)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.ja
va:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.ja
va:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93)
        at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:235)
        at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:177)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:118)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.ja
va:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.SelectNode.invoke(SelectNode.java:98)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.ja
va:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.ja
va:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93)
        at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:235)
        at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:177)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254)
        at org.apache.cocoon.Cocoon.process(Cocoon.java:699)
        at 
org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:1154)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at 
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:354)
        at 
org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:294)

        at 
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
        at org.mortbay.http.HttpContext.handle(HttpContext.java:1808)
        at 
org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:525)
        at org.mortbay.http.HttpContext.handle(HttpContext.java:1758)
        at org.mortbay.http.HttpServer.service(HttpServer.java:879)
        at org.mortbay.http.HttpConnection.service(HttpConnection.java:790)
        at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:952)
        at org.mortbay.http.HttpConnection.handle(HttpConnection.java:807)
        at 
org.mortbay.http.SocketListener.handleConnection(SocketListener.java:197)
        at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:289)
        at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:501)
Caused by: org.apache.avalon.framework.configuration.ConfigurationException:
Could not load class
org.apache.forrest.dispatcher.transformation.DispatcherTransformer for
component named 'dispatcher' at
file:///opt/forrest_trunk/build/plugins/org.apache.forrest.plugin.internal.dispatcher/internal.xmap:65:80
        at 
org.apache.cocoon.components.ExtendedComponentSelector.configure(ExtendedComponentSelector.java:236)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.ComponentsSelector.configure(ComponentsSelector.java:158)
        at 
org.apache.avalon.framework.container.ContainerUtil.configure(ContainerUtil.java:201)
        at 
org.apache.avalon.excalibur.component.DefaultComponentFactory.newInstance(DefaultComponentFactory.java:289)
        at 
org.apache.avalon.excalibur.component.ThreadSafeComponentHandler.initialize(ThreadSafeComponentHandler.java:108)
        at 
org.apache.avalon.excalibur.component.ExcaliburComponentManager.initialize(ExcaliburComponentManager.java:524)
        at 
org.apache.cocoon.components.CocoonComponentManager.initialize(CocoonComponentManager.java:583)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.SitemapLanguage.createComponentManager(SitemapLanguage.java:91)
        at 
org.apache.cocoon.components.treeprocessor.DefaultTreeBuilder.build(DefaultTreeBuilder.java:390)
        at 
org.apache.cocoon.components.treeprocessor.DefaultTreeBuilder.build(DefaultTreeBuilder.java:370)
        ... 39 more
Caused by: java.lang.ClassNotFoundException:
org.apache.forrest.dispatcher.transformation.DispatcherTransformer
        at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
        at org.mortbay.http.ContextLoader.loadClass(ContextLoader.java:207)
        at org.mortbay.http.ContextLoader.loadClass(ContextLoader.java:171)
        at 
org.apache.cocoon.components.ExtendedComponentSelector.configure(ExtendedComponentSelector.java:228)
        ... 48 more
WARN    (2010-08-05) 12:20.50:357   [core.manager] (Unknown-URI)
Unknown-Thread/ExcaliburComponentManager: disposing of handler for
unreleased component. role [org.apache.excalibur.store.StoreJanitor]
WARN    (2010-08-05) 12:20.50:357   [core.manager] (Unknown-URI)
Unknown-Thread/ExcaliburComponentManager: disposing of handler for
unreleased component. role
[org.apache.avalon.excalibur.logger.LoggerManager]
WARN    (2010-08-05) 12:20.50:358   [core.manager] (Unknown-URI)
Unknown-Thread/ExcaliburComponentManager: disposing of handler for
unreleased component. role
[org.apache.cocoon.components.thread.RunnableManager]
WARN    (2010-08-05) 12:20.50:359   [core.manager] (Unknown-URI)
Unknown-Thread/ExcaliburComponentManager: disposing of handler for
unreleased component. role
[org.apache.excalibur.store.Store/XPathXMLFileTransientStore]
WARN    (2010-08-05) 12:20.50:360   [core.manager] (Unknown-URI)
Unknown-Thread/ExcaliburComponentManager: disposing of handler for
unreleased component. role
[org.apache.cocoon.components.modules.input.InputModuleSelector]
WARN    (2010-08-05) 12:20.50:361   [core.manager] (Unknown-URI)
Unknown-Thread/ThreadSafeComponentHandler: Error decommissioning
component: org.apache.forrest.locationmap.LocationMapModule
java.lang.NullPointerException
        at 
org.apache.forrest.locationmap.LocationMapModule.dispose(LocationMapModule.java:106)
        at 
org.apache.avalon.framework.container.ContainerUtil.dispose(ContainerUtil.java:306)
        at 
org.apache.avalon.excalibur.component.DefaultComponentFactory.decommission(DefaultComponentFactory.java:356)
        at 
org.apache.avalon.excalibur.component.ThreadSafeComponentHandler.dispose(ThreadSafeComponentHandler.java:165)
        at 
org.apache.avalon.excalibur.component.ExcaliburComponentSelector.dispose(ExcaliburComponentSelector.java:488)
        at 
org.apache.cocoon.components.ExtendedComponentSelector.dispose(ExtendedComponentSelector.java:343)
        at 
org.apache.avalon.framework.container.ContainerUtil.dispose(ContainerUtil.java:306)
        at 
org.apache.avalon.excalibur.component.DefaultComponentFactory.decommission(DefaultComponentFactory.java:356)
        at 
org.apache.avalon.excalibur.component.ThreadSafeComponentHandler.dispose(ThreadSafeComponentHandler.java:165)
        at 
org.apache.avalon.excalibur.component.ExcaliburComponentManager.dispose(ExcaliburComponentManager.java:623)
        at 
org.apache.cocoon.components.CocoonComponentManager.dispose(CocoonComponentManager.java:526)
        at 
org.apache.avalon.framework.container.ContainerUtil.dispose(ContainerUtil.java:306)
        at org.apache.cocoon.Cocoon.dispose(Cocoon.java:546)
        at 
org.apache.avalon.framework.container.ContainerUtil.dispose(ContainerUtil.java:306)
        at 
org.apache.cocoon.servlet.CocoonServlet.disposeCocoon(CocoonServlet.java:1554)
        at 
org.apache.cocoon.servlet.CocoonServlet.destroy(CocoonServlet.java:518)
        at org.mortbay.jetty.servlet.ServletHolder.stop(ServletHolder.java:244)
        at 
org.mortbay.jetty.servlet.ServletHandler.stop(ServletHandler.java:470)
        at 
org.mortbay.jetty.servlet.WebApplicationHandler.stop(WebApplicationHandler.java:163)
        at org.mortbay.http.HttpContext.stop(HttpContext.java:1979)
        at 
org.mortbay.jetty.servlet.ServletHttpContext.stop(ServletHttpContext.java:145)
        at 
org.mortbay.jetty.servlet.WebApplicationContext.stop(WebApplicationContext.java:504)
        at org.mortbay.http.HttpContext.stop(HttpContext.java:1950)
        at org.mortbay.http.HttpServer.stop(HttpServer.java:732)
        at org.mortbay.http.HttpServer.stop(HttpServer.java:700)
        at org.mortbay.jetty.Server$1.run(Server.java:455)
WARN    (2010-08-05) 12:20.50:362   [core.manager] (Unknown-URI)
Unknown-Thread/ExcaliburComponentManager: disposing of handler for
unreleased component. role
[org.apache.excalibur.xml.xpath.XPathProcessor]

Contents of errors.log are:

ERROR   (2010-08-05) 12:20.10:112   [sitemap] (/)
PoolThread-4/ExtendedComponentSelector: Could not load class
org.apache.forrest.dispatcher.transformation.DispatcherTransformer for
component named 'dispatcher' at
file:///opt/forrest_trunk/build/plugins/org.apache.forrest.plugin.internal.dispatcher/internal.xmap:65:80
java.lang.ClassNotFoundException:
org.apache.forrest.dispatcher.transformation.DispatcherTransformer
        at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
        at org.mortbay.http.ContextLoader.loadClass(ContextLoader.java:207)
        at org.mortbay.http.ContextLoader.loadClass(ContextLoader.java:171)
        at 
org.apache.cocoon.components.ExtendedComponentSelector.configure(ExtendedComponentSelector.java:228)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.ComponentsSelector.configure(ComponentsSelector.java:158)
        at 
org.apache.avalon.framework.container.ContainerUtil.configure(ContainerUtil.java:201)
        at 
org.apache.avalon.excalibur.component.DefaultComponentFactory.newInstance(DefaultComponentFactory.java:289)
        at 
org.apache.avalon.excalibur.component.ThreadSafeComponentHandler.initialize(ThreadSafeComponentHandler.java:108)
        at 
org.apache.avalon.excalibur.component.ExcaliburComponentManager.initialize(ExcaliburComponentManager.java:524)
        at 
org.apache.cocoon.components.CocoonComponentManager.initialize(CocoonComponentManager.java:583)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.SitemapLanguage.createComponentManager(SitemapLanguage.java:91)
        at 
org.apache.cocoon.components.treeprocessor.DefaultTreeBuilder.build(DefaultTreeBuilder.java:390)
        at 
org.apache.cocoon.components.treeprocessor.DefaultTreeBuilder.build(DefaultTreeBuilder.java:370)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.buildConcreteProcessor(TreeProcessor.java:341)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.setupConcreteProcessor(TreeProcessor.java:306)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:252)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:118)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.SelectNode.invoke(SelectNode.java:98)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93)
        at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:235)
        at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:177)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:118)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.SelectNode.invoke(SelectNode.java:98)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
ERROR   (2010-08-05) 12:20.10:112   [sitemap] (/)
PoolThread-4/ExtendedComponentSelector: Could not load class
org.apache.forrest.dispatcher.transformation.DispatcherTransformer for
component named 'dispatcher' at
file:///opt/forrest_trunk/build/plugins/org.apache.forrest.plugin.internal.dispatcher/internal.xmap:65:80
java.lang.ClassNotFoundException:
org.apache.forrest.dispatcher.transformation.DispatcherTransformer
        at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
        at org.mortbay.http.ContextLoader.loadClass(ContextLoader.java:207)
        at org.mortbay.http.ContextLoader.loadClass(ContextLoader.java:171)
        at 
org.apache.cocoon.components.ExtendedComponentSelector.configure(ExtendedComponentSelector.java:228)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.ComponentsSelector.configure(ComponentsSelector.java:158)
        at 
org.apache.avalon.framework.container.ContainerUtil.configure(ContainerUtil.java:201)
        at 
org.apache.avalon.excalibur.component.DefaultComponentFactory.newInstance(DefaultComponentFactory.java:289)
        at 
org.apache.avalon.excalibur.component.ThreadSafeComponentHandler.initialize(ThreadSafeComponentHandler.java:108)
        at 
org.apache.avalon.excalibur.component.ExcaliburComponentManager.initialize(ExcaliburComponentManager.java:524)
        at 
org.apache.cocoon.components.CocoonComponentManager.initialize(CocoonComponentManager.java:583)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.SitemapLanguage.createComponentManager(SitemapLanguage.java:91)
        at 
org.apache.cocoon.components.treeprocessor.DefaultTreeBuilder.build(DefaultTreeBuilder.java:390)
        at 
org.apache.cocoon.components.treeprocessor.DefaultTreeBuilder.build(DefaultTreeBuilder.java:370)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.buildConcreteProcessor(TreeProcessor.java:341)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.setupConcreteProcessor(TreeProcessor.java:306)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:252)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:118)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.SelectNode.invoke(SelectNode.java:98)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93)
        at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:235)
        at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:177)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:118)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.SelectNode.invoke(SelectNode.java:98)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93)
        at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:235)
        at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:177)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254)
        at org.apache.cocoon.Cocoon.process(Cocoon.java:699)
        at 
org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:1154)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at 
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:354)
        at 
org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:294)
        at 
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
        at org.mortbay.http.HttpContext.handle(HttpContext.java:1808)
        at 
org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:525)
        at org.mortbay.http.HttpContext.handle(HttpContext.java:1758)
        at org.mortbay.http.HttpServer.service(HttpServer.java:879)
        at org.mortbay.http.HttpConnection.service(HttpConnection.java:790)
        at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:952)
        at org.mortbay.http.HttpConnection.handle(HttpConnection.java:807)
        at 
org.mortbay.http.SocketListener.handleConnection(SocketListener.java:197)
        at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:289)
        at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:501)
ERROR   (2010-08-05) 12:20.10:126   [sitemap] (/)
PoolThread-4/ExcaliburComponentManager: Caught an exception trying to
initialize the component handler.
org.apache.avalon.framework.configuration.ConfigurationException:
Could not load class
org.apache.forrest.dispatcher.transformation.DispatcherTransformer for
component named 'dispatcher' at
file:///opt/forrest_trunk/build/plugins/org.apache.forrest.plugin.internal.dispatcher/internal.xmap:65:80
        at 
org.apache.cocoon.components.ExtendedComponentSelector.configure(ExtendedComponentSelector.java:236)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.ComponentsSelector.configure(ComponentsSelector.java:158)
        at 
org.apache.avalon.framework.container.ContainerUtil.configure(ContainerUtil.java:201)
        at 
org.apache.avalon.excalibur.component.DefaultComponentFactory.newInstance(DefaultComponentFactory.java:289)
        at 
org.apache.avalon.excalibur.component.ThreadSafeComponentHandler.initialize(ThreadSafeComponentHandler.java:108)
        at 
org.apache.avalon.excalibur.component.ExcaliburComponentManager.initialize(ExcaliburComponentManager.java:524)
        at 
org.apache.cocoon.components.CocoonComponentManager.initialize(CocoonComponentManager.java:583)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.SitemapLanguage.createComponentManager(SitemapLanguage.java:91)
        at 
org.apache.cocoon.components.treeprocessor.DefaultTreeBuilder.build(DefaultTreeBuilder.java:390)
        at 
org.apache.cocoon.components.treeprocessor.DefaultTreeBuilder.build(DefaultTreeBuilder.java:370)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.buildConcreteProcessor(TreeProcessor.java:341)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.setupConcreteProcessor(TreeProcessor.java:306)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:252)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:118)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.SelectNode.invoke(SelectNode.java:98)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93)
        at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:235)
        at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:177)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:118)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.SelectNode.invoke(SelectNode.java:98)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93)
        at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:235)
        at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:177)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254)
        at org.apache.cocoon.Cocoon.process(Cocoon.java:699)
        at 
org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:1154)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at 
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:354)
        at 
org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:294)
        at 
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
        at org.mortbay.http.HttpContext.handle(HttpContext.java:1808)
        at 
org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:525)
        at org.mortbay.http.HttpContext.handle(HttpContext.java:1758)
        at org.mortbay.http.HttpServer.service(HttpServer.java:879)
        at org.mortbay.http.HttpConnection.service(HttpConnection.java:790)
        at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:952)
        at org.mortbay.http.HttpConnection.handle(HttpConnection.java:807)
        at 
org.mortbay.http.SocketListener.handleConnection(SocketListener.java:197)
        at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:289)
        at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:501)
Caused by: java.lang.ClassNotFoundException:
org.apache.forrest.dispatcher.transformation.DispatcherTransformer
        at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
        at org.mortbay.http.ContextLoader.loadClass(ContextLoader.java:207)
        at org.mortbay.http.ContextLoader.loadClass(ContextLoader.java:171)
        at 
org.apache.cocoon.components.ExtendedComponentSelector.configure(ExtendedComponentSelector.java:228)
        ... 48 more
ERROR   (2010-08-05) 12:20.10:131   [access] (/)
PoolThread-4/CocoonServlet: Internal Cocoon Problem
org.apache.cocoon.ProcessingException: Failed to load sitemap from
file:///opt/forrest_trunk/build/plugins/org.apache.forrest.plugin.internal.dispatcher/internal.xmap
        at [ConfigurationException] -
file:///opt/forrest_trunk/build/plugins/org.apache.forrest.plugin.internal.dispatcher/internal.xmap:65:80
        at <map:mount> - file:///tmp/prova/build/tmp/internal.xmap:21:158
        at <map:mount> -
file:///opt/forrest_trunk/main/webapp/sitemap.xmap:368:118
        at 
org.apache.cocoon.components.treeprocessor.DefaultTreeBuilder.build(DefaultTreeBuilder.java:374)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.buildConcreteProcessor(TreeProcessor.java:341)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.setupConcreteProcessor(TreeProcessor.java:306)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:252)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:118)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.SelectNode.invoke(SelectNode.java:98)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93)
        at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:235)
        at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:177)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:118)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.SelectNode.invoke(SelectNode.java:98)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93)
        at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:235)
        at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:177)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254)
        at org.apache.cocoon.Cocoon.process(Cocoon.java:699)
        at 
org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:1154)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at 
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:354)
        at 
org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:294)
        at 
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
        at org.mortbay.http.HttpContext.handle(HttpContext.java:1808)
        at 
org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:525)
        at org.mortbay.http.HttpContext.handle(HttpContext.java:1758)
        at org.mortbay.http.HttpServer.service(HttpServer.java:879)
        at org.mortbay.http.HttpConnection.service(HttpConnection.java:790)
        at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:952)
        at org.mortbay.http.HttpConnection.handle(HttpConnection.java:807)
        at 
org.mortbay.http.SocketListener.handleConnection(SocketListener.java:197)
        at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:289)
        at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:501)
Caused by: org.apache.avalon.framework.configuration.ConfigurationException:
Could not load class
org.apache.forrest.dispatcher.transformation.DispatcherTransformer for
component named 'dispatcher' at
file:///opt/forrest_trunk/build/plugins/org.apache.forrest.plugin.internal.dispatcher/internal.xmap:65:80
        at 
org.apache.cocoon.components.ExtendedComponentSelector.configure(ExtendedComponentSelector.java:236)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.ComponentsSelector.configure(ComponentsSelector.java:158)
        at 
org.apache.avalon.framework.container.ContainerUtil.configure(ContainerUtil.java:201)
        at 
org.apache.avalon.excalibur.component.DefaultComponentFactory.newInstance(DefaultComponentFactory.java:289)
        at 
org.apache.avalon.excalibur.component.ThreadSafeComponentHandler.initialize(ThreadSafeComponentHandler.java:108)
        at 
org.apache.avalon.excalibur.component.ExcaliburComponentManager.initialize(ExcaliburComponentManager.java:524)
        at 
org.apache.cocoon.components.CocoonComponentManager.initialize(CocoonComponentManager.java:583)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.SitemapLanguage.createComponentManager(SitemapLanguage.java:91)
        at 
org.apache.cocoon.components.treeprocessor.DefaultTreeBuilder.build(DefaultTreeBuilder.java:390)
        at 
org.apache.cocoon.components.treeprocessor.DefaultTreeBuilder.build(DefaultTreeBuilder.java:370)
        ... 39 more
Caused by: java.lang.ClassNotFoundException:
org.apache.forrest.dispatcher.transformation.DispatcherTransformer
        at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
        at org.mortbay.http.ContextLoader.loadClass(ContextLoader.java:207)
        at org.mortbay.http.ContextLoader.loadClass(ContextLoader.java:171)
        at 
org.apache.cocoon.components.ExtendedComponentSelector.configure(ExtendedComponentSelector.java:228)
        ... 48 more


The errors in sitemap.log are apparently the same than in error.log.
It seems that the main
problem is that the
org.apache.forrest.dispatcher.transformation.DispatcherTransformer
class
cannot be loaded. Unfortunately I have no idea about how to fix it. I
hope the above info helps
somebody.

Vicent
-- 
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