I have been working on a smooth streaming Windows Phone 8.1 app with VS 2013. If I build it to x86, it deploys to the emulator and works perfectly. Now the problem, I cannot deploy to x64 for emulator or device, I get "Bootstrapper could not connect to machine". Unfortunately, the only way I can see the device (Lumina 929 running 8.1) as a target is to build to x64. So what is the root issue (I'm guessing missing/incompatible libs or other dependencies) and what must I do to get this app deployed to my device for testing? Please help!