Visual Studio 2015 (Community) designer shows NullReferenceException for blank Universal App

Question

I\'m getting a bit frustrated by this, maybe someone has encountered a similar problem or has an idea how to fix it.

I upgraded to Windows 10.
I installed Visu

Answer 1

If you're using HP, this worked for me:

delete the "Platform" environment variable in System->Advanced System Settings->Environment Variables ...

In my case it said =HPD