error returned from a call to the Screen Management Facility (SMG)

    Facility: DEBUG, VMS Debugger

    Explanation: A bad status was returned from a call to SMG. This
    could be a result of any number of things which may or may not be
    a debugger problem.

    User Action: Check the user program for potential interactions
    between it and the debugger; pasteboard sharing and the like.
    Also, check the set up of the terminal which might cause SMG some
    problem. If the error still can't be explained submit a Software
    Performance Report (SPR).