-901 0xFFFFFC7B   NWDP OE RM BAD NETWARE VERSION

Source:  NDPS, Resource Manager NLM program

Explanation:  The Resource Manager encountered a version of NetWare with which it is not compatible.

Possible Cause:  The Resource Manager requires a NetWare 4.11 or later server operating system.

Action:  Run NDPS on NetWare 4.11 or later.