I don't know about Win10 yet, but my Win8.1 OP installed into the C: "Program Files (x86)" - I knew about the "my games" folder approach but decided to try it in "x86" first. No messes and runs very stable. Bt all means I think people should install into a personal folder, I'm just curious as why that didn't matter on my box. Is there a possibility that MS changed something in 8.1 along the way from 8? I'm also curious, Win10 has a "Program Files (x86)" folder, right? Or has a lot changed?