User development, A new message was posted in the thread "Issue specifying the <jar-file> in persistence.xml in JBOSS 5 on linux system": http://community.jboss.org/message/519298#519298 Author : Dragos Bobes Profile : http://community.jboss.org/people/dbobes Message: -------------------------------------------------------------- Hi Peter,   Thank you for your quick reply. That backslash "\" is a mistake made by me when I was editing the post trying to anonymize the application names. In the log file the entry has a forward slash:       java.lang.RuntimeException: could not find child 'myapp.ear/myapppu.jar'     Sorry for the confusion.   Dragos -------------------------------------------------------------- To reply to this message visit the message page: http://community.jboss.org/message/519298#519298