VW suddenly says SN of program is already in use on the network. This SN IS NOT in use, nor are any of our other 4 copies in use at that time either, 5 copies total. Is there a file controlling the program saying program is already in use? Can't find it on workstation! This usually happens (with other programs, such as FastTrack) after a system crash and (FastTrack) -VectorWorks- has not been exited correctly. This may have happened.