5.1.3f1 Mac OS X Standalone release player builds still do not work

In the patch notes we have:
(650630) - Mac OS X Standalone: Fixed stripping of debug symbols in release player builds.

Building my project in 5.1.3f1 resulted in buggy OS X builds.
The x86 build just crashes.
The x86_64 build is going into black screen and “application not responding”. Log file shows "
Platform assembly: /Users/user1/Desktop/ParallelsCross64.app/Contents/Resources/Data/Managed/System.dll (this message is harmless)
Receiving unhandled NULL exception
Obtained 10 stack frames."

We’ve tested it against OS X 10.9.5 and 10.10.3 both have same symptoms.

Any suggestions how this can be solved in a viable period of time?

I have the same issue, can’t start any x86 release builds… x64 builds or x86 development builds work though. Confirmed with an empty project

We’ve had a similar problem before in Unity 4, maybe it’s related: 4.6.1p1 any OSX build crashes immediately on startup (EDIT: also on 4. 6.1p2) - Unity Engine - Unity Discussions

How can it be that something that essential just breaks in an update…?

Submitted a bug:
722362

I’ve managed to strip our project to just a splash screen scene and reproduced the problem.

Submitted a bug: 722376

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Thanks for bug submission, QA are awaiting your response.