"Software update failed"
Every time I open Zotero I get this message saying the 'update failed' and to make sure no other copies of Zotero. I have checked - only one copy as far as I can tell.
https://s3.amazonaws.com/zotero.org/images/forums/u8327859/f22pukqm7ney1iad8kdc.png
https://s3.amazonaws.com/zotero.org/images/forums/u8327859/4wwnb2cidpqb4mz2mbri.png
https://s3.amazonaws.com/zotero.org/images/forums/u8327859/f22pukqm7ney1iad8kdc.png
https://s3.amazonaws.com/zotero.org/images/forums/u8327859/4wwnb2cidpqb4mz2mbri.png
If that doesn't work, you can just delete Zotero from Applications and reinstall Zotero from the download page. Your data won't be affected.