-939 0xFFFFFC55   NWDP OE RM INVALID ARGUMENTS

Source:  NDPS, Resource Manager NLM program

Explanation:  Invalid arguments were passed to the RMS NLM program.

Possible Cause:  Invalid arguments were passed to an NDPS library API.

Action:  Contact the developer of the application.

Action:  If you are trying to debug a program, check the calling code.