FWIW, I too am experiencing the ‘green image’ thing on my Zoom calls. Everything looks great on my end but the folks on the other end are getting a bright, totally green image of me. Nothing I’ve tried fixes this.
However, when I quit ManyCam and switch to Logitech’s ‘LogiCapture’ app the problem goes away and everything on both ends of the Zoom call looks the way it should … So … definitely a problem with ManyCam.
As an FYI, I’m on Win 10 and running the latest versions of both Zoom and ManyCam. Hope this gets fixed quickly!