OH, that sucks. Well, as long as this build is stable..
Can you backgrade to the old build environment, and make it work that way?
Unfortunately not. I tried. I could get it to build in Unity, it's just when I took it to Xcode that I ran into problems. The issue was a combination of Unity's official in-app purchase package and X-code. It would have been possible to fix I'm sure, but I was going to need a lot more time and a new mac computer. Mine couldn't run the newest version of X-Code :(
I guess that's what I get for doing my Xcode compiling on a refurbished mac mini.