the 1 process debugger cannot be run in DECwindows mode
    Facility: DEBUG, VMS Debugger
    Explanation: The debugger must have ASTs enabled at all times
    in order to properly run as a DECwindows program. This is not
    possible for a 1 process debugger. Therefore, the debugger is
    defaulting to not run as a DECwindows debugger.
    User Action: Correct the logical name assignment for DBG$PROCESS
    to be either "MULTIPROCESS" or "DEFAULT", and try again.