Capture One 22 export failure

C1 does not export photos (no variants) completely or at all.

The activity display shows that 500 pictures were exported in 5 seconds. But of course the destination is empty. 

Sometimes 430 or 556 or 10 of the 500 images are exported. The result is pure coincidence. 

Sometimes, however, not a single selected  image can be exported, even those that were exported correctly a few minutes before.

I have already created a new and empty catalog and re-imported the images, but to no avail. It doesn't matter what the file format is (JPEG, TIFF, RAW, DNG), it is always incorrect.

The log file in the console shows that all processes would have run correctly.

I am using C22 "Build 15.2.0.77 (3b8cb00)" on a M1 MacBook Pro (macOS 12.3.1)

Best regards 
Ralf