Gatekeeper dialog on El Capitan is missing... localized strings? I really have no idea what to make of this, but on one of the machines I've upgraded to El Capitan, all of the gatekeeper dialogs display without localized strings:



This displays after launching Chromium from the dock just after having replaced it with a new version by copying an app bundle from a DMG to the Applications folder.

This is clearly not expected behavior, but I'm not sure what I could do to fix it besides reinstalling El Cap (which I'm not too keen on doing if I can avoid it).

Has anyone else seen anything like this, and/or have any ideas for troubleshooting?
I have no definite solution since I haven't seen this issue before, but a few ideas you could try:

Running &quot;First Aid&quot; on your drive in Disk Utility

If you have Time Machine enabled, revert to the latest viable backup

Find out what exactly you replaced and undo (parts of) that manually