Dear Tomcat, Operating system: SunOS 5.8 JDK: j2sdk1.4.2_01 Tomcat: 5.0.28 Logged in as root, upon startup, I am getting the following exception from my tomcat container: Sep 20, 2005 1:59:17 PM org.apache.coyote.http11.Http11Protocol start INFO: Starting Coyote HTTP/1.1 on http-5028 Sep 20, 2005 1:59:17 PM org.apache.coyote.http11.Http11Protocol start INFO: Starting Coyote HTTP/1.1 on http-8080 Sep 20, 2005 1:59:17 PM org.apache.coyote.tomcat5.MapperListener init WARNING: Error registering contexts java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextEntry(HashMap.java:782) at java.util.HashMap$EntryIterator.next(HashMap.java:824) at java.util.HashMap.putAllForCreate(HashMap.java:424) at java.util.HashMap.clone(HashMap.java:656) at mx4j.server.DefaultMBeanRepository.clone(DefaultMBeanRepository.java:56) at mx4j.server.MBeanServerImpl.findMBeansByPattern(MBeanServerImpl.java:160 3) at mx4j.server.MBeanServerImpl.queryObjectNames(MBeanServerImpl.java:1568) at mx4j.server.MBeanServerImpl.queryMBeans(MBeanServerImpl.java:1512) at org.apache.coyote.tomcat5.MapperListener.init(MapperListener.java:115) at org.apache.coyote.tomcat5.CoyoteConnector.start(CoyoteConnector.java:153 7) at org.apache.catalina.core.StandardService.start(StandardService.java:489) at org.apache.catalina.core.StandardServer.start(StandardServer.java:2313) at org.apache.catalina.startup.Catalina.start(Catalina.java:556) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav a:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor Impl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425) Sep 20, 2005 1:59:17 PM org.apache.coyote.http11.Http11Protocol start INFO: Starting Coyote HTTP/1.1 on http-80 Sep 20, 2005 1:59:17 PM org.apache.coyote.tomcat5.MapperListener init WARNING: Error registering contexts java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextEntry(HashMap.java:782) at java.util.HashMap$EntryIterator.next(HashMap.java:824) at java.util.HashMap.putAllForCreate(HashMap.java:424) at java.util.HashMap.clone(HashMap.java:656) at mx4j.server.DefaultMBeanRepository.clone(DefaultMBeanRepository.java:56) at mx4j.server.MBeanServerImpl.findMBeansByPattern(MBeanServerImpl.java:160 3) at mx4j.server.MBeanServerImpl.queryObjectNames(MBeanServerImpl.java:1568) at mx4j.server.MBeanServerImpl.queryMBeans(MBeanServerImpl.java:1512) at org.apache.coyote.tomcat5.MapperListener.init(MapperListener.java:115) at org.apache.coyote.tomcat5.CoyoteConnector.start(CoyoteConnector.java:153 7) at org.apache.catalina.core.StandardService.start(StandardService.java:489) at org.apache.catalina.core.StandardServer.start(StandardServer.java:2313) at org.apache.catalina.startup.Catalina.start(Catalina.java:556) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav a:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor Impl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425) Sep 20, 2005 1:59:17 PM org.apache.jk.common.ChannelSocket init INFO: JK2: ajp13 listening on /0.0.0.0:8009 Sep 20, 2005 1:59:17 PM org.apache.jk.server.JkMain start INFO: Jk running ID=0 time=2/74 config=/opt/gsp/tomcat-5.0.28/conf/jk2.properties Sep 20, 2005 1:59:18 PM org.apache.catalina.startup.Catalina start INFO: Server startup in 376219 ms Please help, Dominic