Thank QI for this fast answer!
For the UnityEditor problem, I just had to put the script in a folder named Editor.
Now, the script works…
Thank
Nice to hear that.
Sorry about my answer didn’t solve you problems directly, I always put scripts that is about editor into Editor folder so I almost forgot that editor script must in that folder. But it is nice that my script would able to help you 
Hi there,
I couldn’t make this work… is this happening to everyone trying to make a build for iOS? Android works fine.
Hey please try the new version 5.1.2, this error has been fixed in this version and is no longer needs my code
Ok, so the latest version of Unity 5 works on the latest OS X 10.11 beta out of the box?
yep
Nice, is it possible to build Apps for iOS 8 for the store or only version 9 for testing?
yes just as normal, from iOS 6.
Of course it can build for release
Ok, so I can install 10.11 beta and use an stable release of Xcode (not beta) to build for the App Store?
I am not a Unity’s internal member but follow my own experience Unity is work on 10.11 and work with Xcode 6.4 and newer version. And since 10.11 Beta 4 Xcode 6.4 can also launch, too. So there shouldn’t be any problem if you upgrade to 10.11 now, but I am not sure if some future update of OS X beta or Unity will ruins currently situation that cause some problem.
The important question is: Is it possible to build an App/Game on OS X 10.11 beta for the AppStore (you’ve to build with a stable release of Xcode to get accepted by Apple)
For this time, yes.
Thank you
you’re welcome
Thanks, mate. Your script works perfectly. I am still on v5.1
Do you know if upgrading to the latest 5.2.1 will solve the issue? Thanks!
Yes it is completely solved