When starting my JBoss server it is giving me a Java error. The header info in my command prompt displays JBoss finding my JDK, but I am concerned with it going to a java folder. The directory it gives the Java is: C:\j2sdk1.4.2_13\bin\java This is the error I am receiving: java.lang.UnsupportedClassVersionError: javax/management/NotificationEmitter (Un supported major.minor version 49.0) There is also a long stack trace that I didn't post. It seems as if my JDK is the wrong version but it is 1.4.2. Any suggestions? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4096722#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...