>At one client our VFP application has stopped working. When clicking on the executable it gives a windows message "File not found" (not a Foxpro message), and the event log refers to an error in MSVRC71.dll. Even reinstalling the complete setup does not change anything, and copying the VFP dll files into the root also does not solve the problem.
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>Anybody has an idea where I should look for the problem?

Probably only unclear wording of embolded part: Did you try with a validated copy of MSVRC71.dll in same folder as the application startup exe ?