DK1 crashing in Unity 5.2

Hello, I'm having no luck getting Unity working with my DK1 - Starting with a blank project/scene and turning on the VR support in player settings - then pressing play in the editor or running a build of the scene results in an instant crash, has anyone else experienced this? - Also, if I save the project with VR support tick box on, I cant open the project again without a crash also.

I would really appreciate some advice on troubleshooting this.

Thanks!

 

Right, got it working now after a lot of messing around! (this sort of thing is painful with super slow internet.)
I uninstalled all my Rift drivers, updated the windows platform and reinstalled Rift runtime to version 1.7 (0.6.0.1 SDK)

And it seems to be working as it should now, hopefully this will help someone else out with the same issue, I still don't know why it wasn't happy before though.