ERRWZTRAP, Error while processing $ZTRAP
Run Time Error: This indicates that $ZTRAP contained invalid M code or caused a run-time error.
Action: Verify the $ZTRAP variable. To get more information about the errors, SET a temporary variable to the contents of $ZTRAP. Then, SET $ZTRAP to "BREAK" and XECUTE the variable. Make sure the source code in $ZTRAP is simple because ZTRAP specifies a string that GT.M invokes when it encounters an exception condition.