我在两台不同的 Mac（iMac 和 Mac Book pro）上收到此错误。不知道为什么人们不能复制它，但我需要一些帮助。
我在运行OS X Yosemite 10.10.4的 Mac 上运行Xcode 7 beta 2（2015 年 6 月 23 日）。
甚至无法编译和运行我的项目..
我从创建菜单创建了一个单视图应用程序项目，就是这样。
编辑：
我尝试删除并重新添加情节提要文件（也无法打开 Main.storyboard），但仍然收到相同的消息。这是崩溃报告：
Process: com.apple.CoreSimulator.CoreSimulatorService [2316]
Path: /Applications/Xcode-beta.app/Contents/Developer/Library/PrivateFrameworks/CoreSimulator.framework/Versions/A/XPCServices/com.apple.CoreSimulator.CoreSimulatorService.xpc/Contents/MacOS/com.apple.CoreSimulator.CoreSimulatorService
Identifier: com.apple.CoreSimulator.CoreSimulatorService
Version: ???
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: com.apple.CoreSimulator.CoreSimulatorService [2316]
User ID: 489132888
Date/Time: 2015-07-08 11:47:46.022 +0100
OS Version: Mac OS X 10.10.4 (14E11f)
Report Version: 11
Anonymous UUID: --value--
Time Awake Since Boot: 7500 seconds
Crashed Thread: 0
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000002, 0x0000000000000000
Application Specific Information:
dyld: launch, loading dependent libraries
Dyld Error Message:
Library not loaded: /usr/lib/libwep
Referenced from: /Applications/Xcode-beta.app/Contents/Developer/Library/PrivateFrameworks/CoreSimulator.framework/Versions/A/XPCServices/com.apple.CoreSimulator.CoreSimulatorService.xpc/Contents/MacOS/com.apple.CoreSimulator.CoreSimulatorService
Reason: no suitable image found. Did find:
/usr/lib/libwep: mmap() error 1 at address=0x105FB8000, size=0x00003000 segment=__TEXT in Segment::map() mapping /usr/lib/libwep
/usr/lib/libwep: mmap() error 1 at address=0x105FBF000, size=0x00003000 segment=__TEXT in Segment::map() mapping /usr/lib/libwep
Binary Images:
0x7fff6a06c000 - 0x7fff6a0a2837 dyld (353.2.1) <72A99D0F-0B56-3938-ABC5-67A0F33757C4> /usr/lib/dyld
0x7fff843dd000 - 0x7fff8470efff com.apple.Foundation (6.9 - 1153.20) <F0FF3A5D-C5B7-34A1-9319-DE1EF928E58E> /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation
0x7fff89079000 - 0x7fff89411ff7 com.apple.CoreFoundation (6.9 - 1153.18) <5C0892B8-9691-341F-9279-CA3A74D59AA0> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
0x7fff8944a000 - 0x7fff8944bff3 libSystem.B.dylib (1213) <17F6DDBE-8FDC-3DD5-8562-76618A81CFE6> /usr/lib/libSystem.B.dylib
0x7fff8d2f1000 - 0x7fff8d4eb46f libobjc.A.dylib (647) <759E155D-BC42-3D4E-869B-6F57D477177C> /usr/lib/libobjc.A.dylib