Thanks for using Codebook and posting, although I’m sorry for the trouble. There’s a bug in the Sierra 10.12.2 update (I’m assuming that’s the macOS version you’re running). You can read more about it here: Problem after upgrade to macOS 10.12.2
We’re currently beta testing an update which contains a fix for this issue. If you’d like to try it out to ensure that it resolves the issue on your end, please PM me or reach out to us at support@zetetic.net and we can provide you with it.
Please let me know if you’re not using Sierra 10.12.2 as I’ve assumed and whether you’d like to try out the beta.
Cheers,
Micah