Thanks, I tried that. With the new leapC.dll copied to the bin and bin-mt directories, DCS would not start in VR. It would always come up in 2D mode. However, I just found that with the default DCS leapC dll's, if I restart the Leap service after booting into DCS VR mode, Leap starts to work "normally". This is the first time I've used Leap and I have to say I'm underwhelmed so far. Tracking seems to be fine, but the finger-to-button/switch interaction is unusable.