LumenRT not view able in Oculus Rift

We've setup a few machines with LumenRT and Oculus Rift headsets with no problem where the Lumen model is viewable with the headset. Have one machine that is being stuborn and not showing Lumen inside Oculus. We've tried different users, uninstalled and reinstalled both pieces of software with no luck. Any ideas? Windows 10 64bit, LumenRT update 11, latest Oculus software, nVidia GTX 1060 video card.