Thanks to all of you for help. The odd thing about 4.2.3 is that the included notes document says that it will work with either JDK5 or JDK6. However, I do not see any indication of whether you must do some configuration to run it with either. I do not find but one download for 4.2.3. However, as I mentioned before, the third part software I am trying to install (TeamCenter PDM system from UG/Siemens) actually requires the specific version 4.0.5. That seems to start up without errors now. Now I just need to learn how to configure it ;-} Mike View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4204832#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...