Oh, boy. I’d been struggling with this for a while. I loaded a view from a nib, and my app kept crashing with an exception saying: loaded the “foo” nib but the view outlet was not set. I was like WTH, I definitely connected the view outlet to the ViewController, what’s going on? I kept resaving the nib, recompiling the app, but to no avail.

After digging some forum threads about this exception I got the idea of cleaning my builds. I did so, and guess what: after rebuilding my app it worked!

Sweet mother of god, why didn’t the compiler notice that I changed the nib?