I recently upgraded Mocha Pro from previous build to current build v 1.61 (6.1.1). When I track a layer, Mocha appears to drop/lose all frames that were not tracked. Meaning, after tracking some frames and giving a dialogue that it could no longer track, all frames on either side of the successful tracked part are now black. Windows 10, Vegas Pro 16 (126.96.36.1994), Nvidia RTX2080 driver 188.8.131.5286
Link to screen capture.