ERRWIOEXC, Error while processing I/O exception string
Run Time Error: This indicates that a device EXCEPTION string contained invalid M code or caused a run-time error.
Action: Review the exception string. To get more information about the errors, SET a temporary variable to the contents of the exception string and XECUTE the temporary variable. The EXCEPTION deviceparameter on an OPEN, USE, or CLOSE command defines an error handler for an I/O device.