Hi. A couple weeks ago we started moving to Vista Business 64 with Autodesk Revit 64. Revit uses a central file on the server that everyone works from and when saving uses opportunistic locking so not more than one person at a time is trying to save. The problem that has popped up is on a large percentage of the time when users 'save to central', they will blue screen. The Vista workstations have the new Client 2 on them with default settings. The servers are Netware 6.5 SP7. If we unload the client and use only MS servers to work from on the file it has not happened. Any thoughts or ideas of settings on the servers or in the client?