Java EE (Java Enterprise Edition) General Discussion

This problem may relate to Tomcat 4.1.12. If there is a Jakarta newsgroup (I can't find one), I would appreciate being redirected to it.

I have been using Tomcat 4.1.12 without a problem until recently it started logging an error (abbreviate copy):

2003-01-30 11:12:50 StandardWrapper[:org.apache.catalina.INVOKER.scroll]: Marking servlet org.apache.catalina.INVOKER.scroll as unavailable
2003-01-30 11:12:50 invoker: Cannot allocate servlet instance for path /servlet/scroll
javax.servlet.ServletException: Wrapper cannot find servlet class scroll or a class it depends on
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:880)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:658)
at org.apache.catalina.servlets.InvokerServlet.serveRequest(InvokerServlet.java:408)
at org.apache.catalina.servlets.InvokerServlet.doGet(InvokerServlet.java:180)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)

... edited ...

at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:533)
at java.lang.Thread.run(Thread.java:484)

----- Root Cause -----
java.lang.ClassNotFoundException: scroll
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1428)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1274)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:874)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:658)
at org.apache.catalina.servlets.InvokerServlet.serveRequest(InvokerServlet.java:408)

... edited ...

at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:380)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:508)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:533)
at java.lang.Thread.run(Thread.java:484)


This occurs for every call to a servlet in most (if not all), of my webapps. No other error is occurring or being logged. I have looked for "Scroll.class" among my separate test copy of Tomcat, JDK1.4.x and several forums but can find no reference to it.

If anyone can shed some light on this I would appreciate it.

Thank you
Tom