Upgraded to OS Monterey on MacBook Pro - now Replace and Chroma Key crashes ManyCam

I just bought a new MacBook Pro and it updated to OS Monterey 12.1. After this upgrade, my ManyCam works fine (overall), except when I enable “Virtual Backgrounds” and click “Replace” or “Chroma-Key” the whole thing crashes.

“Blur” works fine and every other feature seems to work - but, I NEED my virtual backgrounds. I’ve uninstalled and re-installed several times, even the beta version - but, still have this problem.

Any help?