I had the same issue, and i found the solution: I, simply, changed the classpath to my workspace form c:/Document and Settings/workspace to c:/workspace. In fact, I noticed this exception : Illegal character in path at index 18: file:/C:/Documents and Settings/Pat/My Documents/eclipse workspaces/MySeamProject2-ejb/build/classes And I remouved all the 'spaces' in my calsspath. And it work fine now View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4194240#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...