I assume this happens when you run "shutdown.bat"?
Just one guess: as JIRA SECURITY-56 claims that "/server/default/lib/jbosssx.jar" should be included in the classpath, you might modify "shutdown.bat" (add bold part):
The snippet was taken from AS6, if you use a different version, you might need a different line of code.
Hope this helps
Thank you Wolfgang.It worked