MAS 200 v4.3 Trying to run AR renumber utility for one customer. Enter the to/from/new information, preview the report. After closing the report, an error 12 (file already exists or may not exist) displays in a PVX window with no additional information. In the past, this has been indicative of a lock on a temp file. Rebooting server is the solution. Did a reboot, but the problem still exists. I have admin rights to that server so this should not be an issue. I have used the utility in the past without issue.