>Does anyone know if there are problems have both VFP 6 and 7 installed on the same PC? I currently have them both co-existing on one machine but wonder if having both installed may be causing some problems I've been having.

As long as you keep them in separate folders with separate config and foxuser files, you should have no problems.

Many of us have several versions installed in the same PC with no problems.

Be aware that when you install a newer version, all Windows associations point to the newer version (but you can reverse that if you want).