Hi @John Brookbank ,
Thank you for sharing me above information.
Can you confirm that the previous path is
C:\Users\Public? On my side, the default location is
C:\Users\<username>\Documents. Besides, have you tried to create an empty folder in that location like what I mentioned above, and does it work?
I’m not 100% sure if any Windows Registry has been changed cause this behavior. Since resetting VS settings doesn’t work, perhaps reinstalling VS 2010 will work, or you may add Windows related tags to see if any experts who know Windows OS well can share some good suggestions.