Hi, Bill: I have encounter some similar problems. Maybe this problem is cause by following reason (I am not sure). You have a user class com.tad.security.core.logon.imp.LoginContext. This is at /WEB-INF/*, while you call javax.security.auth.Subject. This is at /shared/lib, while it also EXIST in /server/lib in Tomcat 4.1. For some reason, the one in /server/lib is used. And this is a tomcat internal class reposity, it cannot seen the user class. Then strange thing happens. Maybe the writer of tomcat classloader can answer our question. My email similar to this issue at http://marc.theaimsgroup.com/?l=tomcat-user&m=103292834825643&w=2. Regards. -----Original Message----- From: Bill [mailto:[EMAIL PROTECTED]] Sent: Thursday, September 26, 2002 7:46 AM To: tomcat-user Subject: Question from a newbie on running a web application Hi, I just installed Tomcat 4.1 and tried my web application. But, ran into an exception which I have tried to resolved for most of the day, without any success. This is the steps I used: 1. copied the application jar files to %CATALINA_HOME%\shared\lib 2. copied the war file to %CATALINA_HOME%\webapps When tomcat started, the war file expanded into the subdirectories correctly. However, once I started to run the web application, I got the following exception. A couple of questions came out of this: 1. Why do some of the class have "Unkknown Source"? 2. The not-found class, javax.security.auth.SubjectDomainCombiner, belongs to Sun's jaas.jar, which is in the shared\lib directory. This jar also contains the class, javax.security.auth.Subject, which is the class before the not-found class in the exception...this doesn't make much sense to me...how can a class being called by another class in the same jar be not-found? I also moved the jaas.jar to other lib's, e.g. \common\lib, with the same error. Did I miss something? Pls help...thnx, Bill java.lang.ExceptionInInitializerError: java.lang.SecurityException: java.lang.ClassNotFoundException: javax.security.auth.SubjectDomainCombiner at javax.security.auth.Subject.(Subject.java:170) at com.tad.security.core.logon.imp.LoginContext.personalizeRequest(Unknown Source) at com.tad.security.core.logon.imp.JUMAuthenticator.logon(Unknown Source) at com.tad.security.core.tadmimp.logon.TADLogonServlet.doLogon(Unknown Source) at com.tad.security.core.tadmimp.logon.TADLogonServlet.uidPasswordLogon(Unknown Source) at com.tad.security.core.tadmimp.logon.TADLogonServlet.doPost(Unknown Source) at javax.servlet.http.HttpServlet.service(HttpServlet.java:1145) at javax.servlet.http.HttpServlet.service(HttpServlet.java:1264) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application FilterChain.java:247) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh ain.java:193) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja va:260) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok eNext(StandardPipeline.java:643) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja va:191) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok eNext(StandardPipeline.java:643) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2397) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180 ) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok eNext(StandardPipeline.java:643) at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve. java:170) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok eNext(StandardPipeline.java:641) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:171 ) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok eNext(StandardPipeline.java:641) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java :174) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok eNext(StandardPipeline.java:643) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:405) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConne ction(Http11Protocol.java:380) at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:508) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav a:533) at java.lang.Thread.run(Thread.java:484) -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>