Unity Editor Crash

Process: Unity [4876]
Path: /Applications/Unity4.6/Unity.app/Contents/MacOS/Unity
Identifier: com.unity3d.UnityEditor4.x
Version: Unity version 4.6.0b21 (4.6.0b21)
Code Type: X86 (Native)
Parent Process: ??? [1]
Responsible: Unity [4876]
User ID: 501

Date/Time: 2014-10-24 17:22:00.286 +0800
OS Version: Mac OS X 10.10 (14A389)
Report Version: 11
Anonymous UUID:...

Unity Editor Crash