Hi!
I had similar problems with VFP6 appplication running on NT4 Serwer/ Win95,98 clients. Most problems have gone when server was upgraded to new machine with W2000 installed. (for me it looked like hardware problem)
Similar problems also appears with my VFP6 app on Novel Serwer/ Win95,98,Me clients when Microsoft Netware Client is installed (with Novell client it seems that there are no such problems).
It seems that VFP is often not stable when used on network. Maybe it is not VFP fault maybe it is network configuration problem but it is a fact that it is very hard to find something useful in documentations.

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>I'm having the same problem. Window NT 4.0 worksation clients randomly loss their connection, then a series of table and table.variables not found errors. Network neighbourhood is lost until the client ctrl-alt-del to end VFP7 task and restarts the program. I originally suspected a network problems until I saw Dave's VFUG post. Now I'm not sure but suspect it could be a VFP7 issue. Has anyone else experienced this problem. I use a database container and set all table up in work areas when the program begins. On my forms I use the standard wizstyle table button class for navigation and optimistic buffering 5. Since this provide a begin transaction, no database curruption has occurred and all incompleted transaction are rolled back when the client crashes so there is no mess to figure out. Is this a VFP7 issue and if so will it be fixed in SP1?
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>Leland