-1201 0xFFFFFB4F   NWDP OE NF BAD NETWARE VERSION

Source:  NDPS, Notification Service NLM program

Explanation:  The ENS received a bad NetWare version.

Possible Cause:  The server is running a version of NetWare that is earlier than the minimum required by the ENS.

Action:  Upgrade the server to NetWare 4.11 or later.