What you have to do is go to the registry under local machine\software\computer associates\arcserve\base\tape engine and delete all entries except rm setup. Then reboot server. After server is up, go to Start menu...Programs... Arcserve.... Arcserve device configuration. When you get to the setup make sure that there are no tapes in the drives in the library and then click auto configuration. If this completes correctly, then you shouldn't have anymore problems with it hanging up. If it doesn't complete correctly then there is a problem with the library or connections.