FB2Combiner

Listen, yesterday I went down a little rabbit hole with FB2Combiner (app) and figured I’d share, because it was one of those “this should take five minutes” things that turned into an hour of poking around macOS security. The short version: it wouldn’t open. Classic macOS message — “FB2Combiner is damaged and can’t be opened. You should move it to the Trash.” Which is always slightly dramatic. What I did first (and what didn’t work) At first I assumed the download was corrupted. So I deleted it, re-downloaded it, tried again. Same message. Then I did the usual right-click → Open trick to bypass the simple Gatekeeper warning. Nope. Same “damaged” dialog. That’s when I started thinking this wasn’t actually about corruption. I even ran: xattr -d com.apple.quarantine /Applications/FB2Combiner.app because sometimes it’s just the quarantine flag. Still didn’t launch. So clearly not just that. What I eventually realized The “damaged” message on macOS often doesn’t literally mean the app is br