I have Vista Ultimate OS. When I attempt to load software - MS Office 2010 for example - i receive an error: "Microsoft Office Professional Plus 2010 encountered an error during setup. Error 1606. Could not access network location %APPDATA%\. Error 1606. Could not access network location %APPDATA%\." The MS Office Professional is a valid, licensed copy that I bought at Microcenter. The license key is accepted without any error messages. The same error displays when I attempt to load any software. Nothing loads. Does anyone have an idea on how to fix this?