Xcode 8 Quick Help Not Working

Question

I have Xcode 8.2.1 and have the Documentation installed (Preferences/Components/Documentation), but the Quick Help inspector and Option + Click both show "No Quick Help" and a button to "Search Documentation". I even tried in Terminal -defaults delete com.apple.dt.Xcode IDEIndexDisable but I received Domain (com.apple.dt.Xcode) not found. Defaults have not been changed. What am I missing?

Answer 1

I resolved it by deleting Xcode 8 from Applications, all items in ~/Library/Developer and the com.apple.dt.Xcode.plist file in /Library/Preferences. I then rebooted, emptied the Trash, downloaded and installed Xcode from the App store. I think this problem was a result of upgrading to Xcode 8 over Xcode 7, but not completely sure. Anyway, Quick Help works now and I can search the documentation when before it was stuck on "Loading".

Answer 2

I've run into this several times when upgrading Xcode and have made it a practice to remove the old version before installing the new. Great job and tutorial!