Close month in job cost

SUGGESTED

For the last 4-5 months, I have been unable to close the month in jobcost without restarting the Sage server.  I can close the general ledger without any issues.  I get the error that the job cost master is in use, but no other user is logged in when I attempt to close jobcost for the month.  Has anyone else had this issue or have a suggestion of how I might be able to move forward without our IT support?