I don't want to waste anyone's time because this is a very minor issue, but I'm using Zotero Standalone and I got a message: "A WebDAV file sync error occurred. Please restart Firefox and try syncing again."

The reference to Firefox seems to be an artifact from when Zotero ran in Firefox only. This should not be a high priority, but also is probably a really easy fix. I captured a screenshot and can provide it directly if helpful.

Thanks for an incredible productivity tool!