btw...after looking at your reported issue again, I now know what's happening.

No endless loop 8)

It is indeed one of the fixmissing advanced options. But I think it's the 'deeper check for fixable missing files'. That check also looks in each rompath (in your case the unzipped set) for each missing file. And even worse, it calculates hashvalues for each file....and that happens over and over again.
I guess I can speed it up by remembering the already calculated hashes.


Roman Scherzer