I’ve been using Alcatraz to manage Xcode plug-ins for some time now. After updating to Xcode 6.3.2 and restarting, I was prompted with this:
Without paying too much attention, I clicked “Skip Bundles”, and all my Xcode plugins were disabled.
It turns out, Xcode now has a whitelist / blacklist of bundles you enable. You can check it from the Terminal by running:
The bad news is that the prompt to load the bundles won’t show again, even if you reinstall Alcatraz. The fix is simple though, just delete the whitelist / blacklist by running:
defaults delete com.apple.dt.Xcode DVTPlugInManagerNonApplePlugIns-Xcode-6.3.2
and re-open Xcode to be prompted again (and this time make sure you click “Load Bundles”).