[tomsem]

I renamed Caches and Preferences folders, went through first use, and it crashed immediately. I tried using current db location, and a new one, with the same result. I don't see anything new in the CRs, but am attaching the latest of those.

So, not a database issue.

I tried 6.1.0 and it also crashes, so it seems like a system thing.

I grabbed the list of Open Files and Ports and eliminated everything in calibre.app (attached). I don't know if this gives us any clues about what else might be causing trouble. Deleting the 'saved state' folder didn't help any, but thought it worth a try.

We do have a couple of M1 Macs (one I haven't set up yet). I guess this is as good an excuse to do so, and at least I would have a backup system ready to go (not that I have any reason to think anything's wrong with this one, other than this very strange issue with calibre).

At any rate, CLI still works great. Who needs a GUI?

Thank you!