That's odd.. we're all using Xcode 7.2 quite happily with that project, and the changes look completely fine to me. Are you sure there's not something else going on?
It seems to be happening on my largest project only. Something with that commit makes some changes that makes the project unloadable, I've tried ten times going back and forward between that commit and the one before and I'm sure that is the culprit..
I will install a text-diff plugin on sublime text when I get home to see what actually changes between the two project files, I will get back to you :)