Hi,

I already developed a plugin, which works quite well.
Now I tried to develope a new one, export it via Eclipse as a .jar file, but when I visit the page, where it should be inserted I get the error:
"Instanziierung des Plugins 'ReadRoomStructurePlugin' fehlgeschlagen."
English: "Instantiation of Plugin 'ReadRoomStructurePlugin' failed.

The Stacktrace says:

2008-09-21 12:48:18,421 [http-localhost%2F127.0.0.1-8080-1] INFO com.ecyrd.jspwiki.plugin.PluginManager JSPWiki:/JSPWiki/ JSPWiki:http://localhost:8080/JSPWiki/ - Cannot initialize plugin ReadRoomStructurePlugin java.lang.ClassCastException: ReadRoomStructurePlugin cannot be cast to com.ecyrd.jspwiki.plugin.WikiPlugin at com.ecyrd.jspwiki.plugin.PluginManager$WikiPluginInfo.newPluginInstance(PluginManager.java:868) at com.ecyrd.jspwiki.plugin.PluginManager$WikiPluginInfo.initializePlugin(PluginManager.java:794) at com.ecyrd.jspwiki.plugin.PluginManager.registerPlugin(PluginManager.java:683) at com.ecyrd.jspwiki.plugin.PluginManager.execute(PluginManager.java:348)
   at com.ecyrd.jspwiki.forms.FormOutput.execute(FormOutput.java:127)
at com.ecyrd.jspwiki.plugin.PluginManager.execute(PluginManager.java:383) at com.ecyrd.jspwiki.parser.PluginContent.getText(PluginContent.java:158)
   at org.jdom.output.XMLOutputter.printTextRange(XMLOutputter.java:1054)
   at org.jdom.output.XMLOutputter.printElement(XMLOutputter.java:934)
at org.jdom.output.XMLOutputter.printContentRange(XMLOutputter.java:1007) at org.jdom.output.XMLOutputter.outputElementContent(XMLOutputter.java:445) at com.ecyrd.jspwiki.render.XHTMLRenderer.getString(XHTMLRenderer.java:63) at com.ecyrd.jspwiki.render.RenderingManager.getHTML(RenderingManager.java:258) at com.ecyrd.jspwiki.render.RenderingManager.getHTML(RenderingManager.java:299)
   at com.ecyrd.jspwiki.WikiEngine.textToHTML(WikiEngine.java:1469)
   at com.ecyrd.jspwiki.WikiEngine.getHTML(WikiEngine.java:1411)
at com.ecyrd.jspwiki.tags.InsertPageTag.doWikiStartTag(InsertPageTag.java:128)
   at com.ecyrd.jspwiki.tags.WikiTagBase.doStartTag(WikiTagBase.java:89)
at org.apache.jsp.templates.default_.PageTab_jsp._jspx_meth_wiki_005fInsertPage_005f0(PageTab_jsp.java:677) at org.apache.jsp.templates.default_.PageTab_jsp._jspService(PageTab_jsp.java:277)
   at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:336)
   at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654) at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:557) at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:481) at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:968) at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:609)
   at com.ecyrd.jspwiki.tags.IncludeTag.doEndTag(IncludeTag.java:84)
at org.apache.jsp.templates.default_.PageContent_jsp._jspx_meth_wiki_005fInclude_005f0(PageContent_jsp.java:442) at org.apache.jsp.templates.default_.PageContent_jsp._jspService(PageContent_jsp.java:148)
   at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:336)
   at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654) at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:557) at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:481) at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:968) at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:609)
   at com.ecyrd.jspwiki.tags.ContentTag.doEndTag(ContentTag.java:126)
at org.apache.jsp.templates.default_.ViewTemplate_jsp._jspx_meth_wiki_005fContent_005f0(ViewTemplate_jsp.java:566) at org.apache.jsp.templates.default_.ViewTemplate_jsp._jspService(ViewTemplate_jsp.java:142)
   at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:336)
   at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654) at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:557) at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:481) at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:968) at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:609)
   at com.ecyrd.jspwiki.tags.IncludeTag.doEndTag(IncludeTag.java:84)
   at org.apache.jsp.Wiki_jsp._jspService(Wiki_jsp.java:114)
   at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:336)
   at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.ecyrd.jspwiki.ui.WikiServletFilter.doFilter(WikiServletFilter.java:99)
   at com.ecyrd.jspwiki.ui.WikiJSPFilter.doFilter(WikiJSPFilter.java:91)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:182) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
   at java.lang.Thread.run(Unknown Source)


Any idea, why it is not able to cast ?

Regards
Benedikt

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