Application that is running properly on tomcat 5.0.28 is giving following error on JBoss Web/2.1.2.GA type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception org.apache.jasper.JasperException: Failed to load or instantiate TagExtraInfo class: org.apache.struts.taglib.logic.IterateTei org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:51) org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:409) org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:281) org.apache.jasper.compiler.TagLibraryInfoImpl.createTagInfo(TagLibraryInfoImpl.java:415) org.apache.jasper.compiler.TagLibraryInfoImpl.parseTLD(TagLibraryInfoImpl.java:250) org.apache.jasper.compiler.TagLibraryInfoImpl.<init>(TagLibraryInfoImpl.java:163) org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:429) org.apache.jasper.compiler.Parser.parseDirective(Parser.java:491) org.apache.jasper.compiler.Parser.parseElements(Parser.java:1438) org.apache.jasper.compiler.Parser.parse(Parser.java:137) org.apache.jasper.compiler.ParserController.doParse(ParserController.java:255) org.apache.jasper.compiler.ParserController.parse(ParserController.java:103) org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:171) org.apache.jasper.compiler.Compiler.compile(Compiler.java:333) org.apache.jasper.compiler.Compiler.compile(Compiler.java:313) org.apache.jasper.compiler.Compiler.compile(Compiler.java:300) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:585) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:312) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:322) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) root cause java.lang.ClassCastException: org.apache.struts.taglib.logic.IterateTei org.apache.jasper.compiler.TagLibraryInfoImpl.createTagInfo(TagLibraryInfoImpl.java:413) org.apache.jasper.compiler.TagLibraryInfoImpl.parseTLD(TagLibraryInfoImpl.java:250) org.apache.jasper.compiler.TagLibraryInfoImpl.<init>(TagLibraryInfoImpl.java:163) org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:429) org.apache.jasper.compiler.Parser.parseDirective(Parser.java:491) org.apache.jasper.compiler.Parser.parseElements(Parser.java:1438) org.apache.jasper.compiler.Parser.parse(Parser.java:137) org.apache.jasper.compiler.ParserController.doParse(ParserController.java:255) org.apache.jasper.compiler.ParserController.parse(ParserController.java:103) org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:171) org.apache.jasper.compiler.Compiler.compile(Compiler.java:333) org.apache.jasper.compiler.Compiler.compile(Compiler.java:313) org.apache.jasper.compiler.Compiler.compile(Compiler.java:300) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:585) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:312) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:322) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) note The full stack trace of the root cause is available in the JBoss Web/2.1.2.GA logs.
You should report this to the Struts project: https://issues.apache.org/struts/secure/Dashboard.jspa Apologies for the multiple trackers, we're on the old one.
Update assignee to Tomcat dev list