You're seeing that just when you open the settings? Can you provide a Debug ID for reproducing this?

https://s3.amazonaws.com/zotero.org/images/forums/u11417176/76crpb4kzal46cjuuj75.png

We'll look into that error, but note that your attachment paths are totally messed up — it looks like you previously set the Linked Attachment Base Directory to your Zotero data directory, which is never correct and could cause all sorts of bizarre problems. Zotero prevents that these days, but you might have set that before it was disallowed. This isn't something we can help with, but once the error is resolved, you should try to separate these things.

@dstillman: Hi, I'm having the same problem here and glad to provide more details. My Debug ID is D1574744580.

@dstillman: I really appreciate your timely update, it works just fine in beta 93 in my case. Thanks!