[FONT=&]UPDATE[/FONT] [FONT=&]I renamed the VS 2013 directory.. and I tried running the VS 2015 uninstall and reinstall.. it blabbered something about VS c++ redistrubutables 2013 and 2015 installed being different versions so I removed anything after 2012 c++ redistributables . And then I managed to get VS 2015 installed, though no item linking to devenv.exe in the start menu so I made one and it launched. Thanks anyhow.[/FONT]