Unreal 4.12 won't open in Oculus Rift CV1

Have a project that was opening in Oculus fine with 4.11.2 (via Alt-Enter after launching), but now after upgrading to 4.12 it’s no longer working. VR Preview still works within editor-- just not the build. Any ideas? Thanks.

Hello iBrews,

This is a known issue (UE-31719) and It has been submitted to the developers for further consideration. I have provided a link below to the original thread. Please feel free to visit the provide thread for future updates.

Link: VR game not loading - XR Development - Epic Developer Community Forums

Make it a great day

More discussion here:

You can get it to work by executing with -vr, or typing “stereo on” into the console while playing.

Performance is absolutely horrible on the CV1 compared with the DK2, was running fine with DK2 and SDK 0.8 (from 75 fps down to about 20). Tracking also is completely broken for me, left and right is switched, startup position is also different.

hey man! tell me something, do you have your “Vr preview” activated? i mean…is not grayed out? how? i can’t do that, i read and read lot of topics about this and i can’t fix my problema with this, why i can’t test my Project with my Oculus rift DK2 in UE4.12 please help me man!
cheers!

no vr preview was not greyed out. Not sure what the status is of Unreal with DK2. My CV1 is now working fine with 4.13-- there’s also a great new VR template: