My company is on IFS 10 UPD 13 and we got the patch to allow sockets in the .net print agent. This was pulled out of a future patch and supplied to us. We are experiencing an issue where certain printers are having the error “Listener Failed: The process cannot access the file ‘c:\tmp\...\spool_queue.dat’ because it is being used by another process.” Would anyone know what might cause this error to occur? Once we restart the service the printer starts working again.