I looked through the apps that are incompatible with Windows 8.1 thread and didn't find a single mention of this, nor does a Google search turn up anything. I'm running a fresh brand new install of Windows 8.1 x64, and when I run the installer for either Visual Studio 2012 Pro or Windows Phone SDK, the installer gets to the splash screen and immediately crashes. I've tried running the installer in compatibility mode, I've made sure literally every optional feature under "Turn Windows features on or off" is turned on, I've made sure I'm up-to-date with the 8.1 updates, my Windows 8.1 is activated with the key from Microsoft, but no matter what, the installers just crash immediately. How did Microsoft break compatibility with its own developer tools? I know, I know, it's a beta, and obviously if I can't get Visual Studio to work I'll go back to 8, but I'd really love to keep running 8.1 and use Visual Studio, has anyone else encountered this problem and possibly found a way to fix it?