I haven't debugged it to find the cause. I guess it is all the manual parsing that's in this code? :-) The problem occurs if you do | URL url = new URL("vfsmemory://MYID/directory); | URL sub = new URL(url, "sub"); | The actual URL comes out incorrectly as: vfsmemory://MYID/sub instead of vfsmemory://MYID/directory/sub The obvious hack is to do | URL sub = new URL(url + "/sub"); | but generic code won't be able to do this. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4130493#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...