For the last week or so, the Firefox web clipper loads fine (no spinning, no authentication issue) in FF18.0.1, but if I try to save anything, I get a generic error "Cannot create. Unspecified error". I've tried switching from saving to Web to saving to Desktop. Cleared cache a minute ago; no luck. Upgraded desktop client to latest GA this morning. No changes. Interestingly enough, I can save to Evernote fine with Clearly. The Chrome clipper also works well. Windows 7 Home Premium. Any advice much appreciated.