Hello list,
I tried to build a new magnolia module against a fresh svn checkout.
When I start tomcat from eclipse I get following error:

java.lang.IncompatibleClassChangeError
        at com.foo.bar.MyModule.init(MyModule.java:26)
        at info.magnolia.cms.module.AbstractModule.start(AbstractModule.java:84)
        at
info.magnolia.module.ModuleManagerImpl.startModule(ModuleManagerImpl.java:339)
        at
info.magnolia.module.ModuleManagerImpl.startModules(ModuleManagerImpl.java:298)
        at 
info.magnolia.cms.beans.config.ConfigLoader.load(ConfigLoader.java:140)
        at 
info.magnolia.cms.beans.config.ConfigLoader.<init>(ConfigLoader.java:96)
        at
info.magnolia.cms.servlets.PropertyInitializer.contextInitialized(PropertyInitializer.java:197)
        at
org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3763)
        at
org.apache.catalina.core.StandardContext.start(StandardContext.java:4211)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1013)
        at org.apache.catalina.core.StandardHost.start(StandardHost.java:718)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1013)
        at 
org.apache.catalina.core.StandardEngine.start(StandardEngine.java:442)
        at 
org.apache.catalina.core.StandardService.start(StandardService.java:450)
        at 
org.apache.catalina.core.StandardServer.start(StandardServer.java:709)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:551)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:294)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:432)
07.10.2007 20:44:40 org.apache.catalina.core.StandardContext start
SCHWERWIEGEND: Error listenerStart

1.
How can I get rid of this error and build a new module that works?
I understand that some classes in the library changed and have to be
recompiled. But what classes or jar is it?

2.
AbstractModule seems to be deprecated. How can I develop a magnolia
module that is up-to-date?

Thank you for your help.

Thomas

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