When I upgraded from 2831 to 2841, my interface launch stalled completely. I determined it has something to do with DDE being enabled. If I edit interface.ini and turn off DDE face tracking, the interface app launches successfully. I also tried 2843, 44, and 48. All of these exhibit this new bug.
If I start the interface, having manually adjusted the .ini file to turn off DDE, I can enable the camera. It is when I select “Calibrate Camera”, that the interface app jams up.