That is the explanation. You have to: RUN $SHUTUP To shut down cleanly. Else you will find consistently the SYSSCAN.TMP problem you describe. The magic spell Johnny wrote about will fix the problem in case you can't shutdown properly. Jordi Guillaumes i Pons Barcelona - Catalunya - Europa El 17/03/2013, a les 14:48, Mark Benson <md.benson at gmail.com> va escriure: suspect the reason is I don't actually know how to cleanly shutdown RSX-11M+. I vaguely remember something about a SHUTUP command?