With SDK 0.5.0.1 and 0.6.0.0, I have run into an error condition which I have reproduced multiple times. It results in a blue screen of death with an APC_INDEX_MISMATCH. That's usually due to a driver issue. Steps to reproduce:
CONTROL-SHIFT-ESCAPE [or manually run task manager]
If necessary, click on "More Details" on the lower left of the window.
Click the Performance Tab
Click "Open Resource Monitor" at the bottom of the window
I usually go to the Memory tab, but that probably isn't necessary.
Click on the Image field to sort by process name.
Click on the CHECKBOX next to OVRServer_x64.exe (not the name)
I may not be checking these forums. Reddit preferred if you have followups.