No error report because it still says "Getting updated data from sync server." It's been doing this since February 13th, but just on one computer and I think just in one Group Library. I updated zotero, no change. Zotero will be open all day every day and sync just keeps spinning. Shut down at end of day, same thing the next day. I'm using Zotero Standalone on a MacBook Pro with OS 10.11.6.