Hi,
Please download and install VisualGDB version 4.1r4, we changed the source cache to depend on the variable %LOCALAPPDATA% there. So, the source cache is stored per user but the project file is not dependent on a particular user’s directories.
After installing the new version, go to VisualGDB Project Properties, change something in Makefile settings and press on Apply to rerun the toolchain tests. You can then check in the usual VS settings’ NMake page whether the directories now depend on %LOCALAPPDATA%.