@SuperGogeta555 Your problem might be in GroupManager if you are using it set "build-true" when making groups in GroupManager.
OK. I'm testing it now on my server will see if any error's appear. Download link: http://dl.dropbox.com/u/96741586/xAuth-2.0.10.jar from Samix689
15:06:18 [SEVERE] Got an exception when breaking a block! 15:06:18 [SEVERE] java.lang.NullPointerException 15:06:18 [SEVERE] at...
Separate names with a comma.