Does this problem occur on more than one workstation? It could be related to a resource or memory issue - if the workstation is rebooted, does the problem go away? Does the user shut down the computer at the end of each work day?

Only one person does invoices so don't know if it would occur on others. The computer is shut down every night. The problem is very random, maybe 1 invoice in every 75 or so does it. This happened on her old xp machine and continues on the new win7 machine. The network has been replaced and the server as well.

I can understand why this would be difficult to troubleshoot and duplicate for that matter since it only happens once every 75 or so. At this point it's probably best over the next while to get the end-user to pay attention to any patterns or common factors when the freeze occurs. For example, what other modules are opened in BusinessVision? What other third-party applications are opened? Perhaps it could be clicking the mouse somewere that is triggering it. Determining the exact events or circumstances will help to get to the bottom of this problem. Hope that helps and all the best!

Are you getting an error code when it kicks you out.  We were having a similar problem when printing invoices and got error 114 - we finally figured out that BV didn't like the printer driver for our Xerox machine so we print to screen.

no error message - just hangs the system, then boots the user out. Had the same thing start up with another client on Monday. I think we have figured her problem to have been a missing java update. Won't know for probably a day or two but as of this morning getting the latest update SEEMS to have fixed it.