I have tried it (CV-StopMotion) with MacOS 11.1 /11.2.1 /11.3 [beta], all fine here.
What I have encountered with 11.1 was that it had some problems allowing files to be written. The Disk Utility cleared this.
Any other problems will be handled by the Developer team.
I have used a fresh installed Cinema 4D version (23.110) and the current available CV-Toolbox. The result is in the screenshot below.
A manual installation might help.
I hope it will work for you.
My best wishes
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