Visual Studio 2015RC not launching anymore

Just upgraded to 5.2. Tried launching Visual Studio, but it only gets to 1/3 of the loading bar, gets stuck forever and launches MonoDevelop instead.
I tried removing Visual Studio Tools for Unity from my project, tried repairing Visual Studio, tried reinstalling Unity. Doesn’t work. Any ideas?

As mentioned in the title, I’m on Visual Studio 2015 RC. I’m using Unity 5.2.0f3.

53943-import.pngPlease delete existing UnityVS folder from your project. Install version 2.1 of VSTU. Within Unity go to Assets->Import Package->Visual Studio 2015 Tools. This worked for me.

Happens to me too with VS 2012.
Worked fine with the UnityVS plugin before in 5.1.x and all previous versions.

Run unity as administrator , work for me.

Running Unity as Administrator and Visual Studio as Administrator worked for me too, thanks yantrab.

I Have another solution that might work for some people, because it worked for me:
You open Visual Studio the normal way, like you would open any other program.
Then you open up unity.
Then it doesn’t freeze at 1/3 of the way, at least for me.