I know this is a little off topic but I'm lost as to where to start. We're currently working on an app and when I went to start Tomcat this morning I got a java.lang.NoClassDefFoundError: javax/servlet/Filter.
This installation has been working fine for months and the only change was when I upgraded the struts jars to 2.09 this morning. I tried going back to 2.08 but that hasn't solved the problem. I tried googling with no luck. My environment is: Tomcat: 6.0.10 JVM: Apple 1.5.0_07-164 The Servlet-api jar looks fine and as I sad it was working perfectly yesterday. Any help would be so appreciated at this point. Z. PS here's the detailed stack trace: SEVERE: Exception starting filter struts java.lang.NoClassDefFoundError: javax/servlet/Filter at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:620) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124) at java.net.URLClassLoader.defineClass(URLClassLoader.java:260) at java.net.URLClassLoader.access$100(URLClassLoader.java:56) at java.net.URLClassLoader$1.run(URLClassLoader.java:195) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav a:1273) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav a:1204) at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilter Config.java:249) at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFil terConfig.java:397) at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterCon fig.java:108) at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:36 93) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4342) at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1177) at org.apache.catalina.manager.HTMLManagerServlet.start(HTMLManagerServlet.java :542) at org.apache.catalina.manager.HTMLManagerServlet.doGet(HTMLManagerServlet.java :105) at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application FilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh ain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja va:228) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja va:175) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase .java:525) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128 ) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104 ) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java :109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http 11Protocol.java:634) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445) at java.lang.Thread.run(Thread.java:613) Aug 5, 2007 2:02:10 PM org.apache.catalina.core.StandardContext filterStart SEVERE: Exception starting filter struts-cleanup java.lang.NoClassDefFoundError: javax/servlet/Filter at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:620) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124) at java.net.URLClassLoader.defineClass(URLClassLoader.java:260) at java.net.URLClassLoader.access$100(URLClassLoader.java:56) at java.net.URLClassLoader$1.run(URLClassLoader.java:195) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav a:1273) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav a:1204) at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilter Config.java:249) at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFil terConfig.java:397) at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterCon fig.java:108) at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:36 93) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4342) at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1177) at org.apache.catalina.manager.HTMLManagerServlet.start(HTMLManagerServlet.java :542) at org.apache.catalina.manager.HTMLManagerServlet.doGet(HTMLManagerServlet.java :105) at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application FilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh ain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja va:228) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja va:175) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase .java:525) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128 ) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104 ) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java :109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http 11Protocol.java:634) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445) at java.lang.Thread.run(Thread.java:613)