Chitubox Pro v1.2 suddenly won't open any old chitubox project files. This just started happening within the last few days. I can open and drop stl files but the chitubox files themselves are grayed out and cannot be selected or drag and dropped in. However, any newly created chitubox project files saved can be opened.

I have a number of old in-progress chitubox projects that I would hate to lose. Anyone else come across this?

I tried uninstalling and re-installing Chitubox Pro but the problem persists. This is on a Macbook Air running on the Catalina ios.