UPDATE:
Everyone!
Please try the patch suggested by clausdoerge below, reposting link here:
https://unity3d.com/unity/qa/patch-releases
It worked for me and if it doesn’t work for some of you I think this fact will be useful info for the developers at Unity.
I try to build my project for iOS using my El Capitan machine, however Unity 5 crashes every time…
I have seen similar issues for people using the El Capitan beta and then it was alegedly fixed, however I am running the final version (10.11) and the latest Unity 5 (5.1.0f3) and still get similar issues.
The crash log is below (truncated, can submit the full but it is obviously very long):
Process: Unity [7381]
Path: /Applications/Unity/Unity.app/Contents/MacOS/Unity
Identifier: com.unity3d.UnityEditor5.x
Version: Unity version 5.1.0f3 (5.1.0f3)
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: Unity [7381]
User ID: 501
Date/Time: 2015-10-04 12:34:03.278 +0200
OS Version: Mac OS X 10.11 (15A284)
Report Version: 11
Anonymous UUID: 0BDC8732-3744-1D45-225B-04375B223E5C
Sleep/Wake UUID: 224FAB5F-FFE1-4AFB-BD25-ADB24E2F7934
Time Awake Since Boot: 220000 seconds
Time Since Wake: 9800 seconds
System Integrity Protection: enabled
Crashed Thread: 0 CrBrowserMain Dispatch queue: com.apple.main-thread
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Application Specific Information:
*** Terminating app due to uncaught exception ‘NSInvalidArgumentException’, reason: ‘-[NSURL length]: unrecognized selector sent to instance 0x122590f80’
Performing @selector(ok:) from sender NSButton 0x12de16fe0
terminating with uncaught exception of type NSException
abort() called
Application Specific Backtrace 1:
0 CoreFoundation 0x00007fff9a104bd2 __exceptionPreprocess + 178
1 libobjc.A.dylib 0x00007fff93dc14fa objc_exception_throw + 48
2 CoreFoundation 0x00007fff9a16e0ed -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
3 CoreFoundation 0x00007fff9a0753d1 forwarding + 1009
4 CoreFoundation 0x00007fff9a074f58 _CF_forwarding_prep_0 + 120…