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cameraCollection.CoCreateInstance(CLSID_NPCameraCollection)

return NULL on any configuration, but at my config application work only with shotdowned driver software.

On the PC where application don't return NPCameraCollection software version 4.0.30 and 4.1.34 on my.

Sorry for engish

Are you refering to using the OptiTrack SDK?

In order to use the OptiTrack API, make sure the OptiTrack SDK is installed.

Yes, thanks!
Already work on

But without TrackIR SDK sadly