No matter what I've got selected in Interface Builder, the Inspector did apparently not register the selection and only showed "No selection".
I tried opening and closing files, restarting Xcode and even rebooting my Mac. No change! What the heck is going on?
Other projects work just fine. It's just this project...
I finally found the simple solution here.
Snipped from that site:
Here’s how you can fix it in two steps without even having to restart Xcode:
- Select another file (which isn’t an Interface Builder type) in the current tab with the issue.
- Open a new tab and select the Interface Builder file which was having the problem.