title: Xcode 5 crashes -- Xcode quit unexpectedly
body: <p>Xcode 5 from the App Store crashes when I select any file in the Project Navigator or when I try to edit it. I have deleted all plugins and the derived data for the app and it keeps crashing.</p>
  
  <p>Does anyone know how to fix this and why this is happening?</p>
  
  <p>Below is the first part of the error.</p>
  
  <pre><code>Exception Type:  EXC_CRASH (SIGABRT)
  Exception Codes: 0x0000000000000000, 0x0000000000000000
  
  Application Specific Information:
  ProductBuildVersion: 5A1412
  ASSERTION FAILURE in /SourceCache/DVTFoundation/DVTFoundation-3532/Framework/Classes/Protocols/DVTInvalidation.m:243
  Details:  &lt;IDESourceControlCredentialsValidator, 0x7faec5e3c9b0&gt; was never invalidated.
  </code></pre>
  
  <p>I am not sure this helps but here is the Backtrace</p>
  
  <pre><code>Backtrace for allocation (if _creationBacktrace is set):
   (null)
  Object:   &lt;IDESourceControlCredentialsValidator: 0x7f86dceeb080&gt;
  Method:   -dealloc
  Thread:   &lt;NSThread: 0x7f86d8414c80&gt;{name = (null), num = 1}
  Hints:   None
  Backtrace:
    0  0x000000010e3a1188 -[IDEAssertionHandler handleFailureInMethod:object:fileName:lineNumber:messageFormat:arguments:] (in IDEKit)
    1  0x000000010d137655 _DVTAssertionHandler (in DVTFoundation)
    2  0x000000010d137984 _DVTAssertionFailureHandler (in DVTFoundation)
    3  0x000000010d20c6a6 _DVTInvalidation_DeallocSuper (in DVTFoundation)
    4  0x000000010e33e2a3 -[IDESourceControlSSLAuthenticationWindowController .cxx_destruct] (in IDEKit)
    5  0x00007fff8c00bfcc object_cxxDestructFromClass(objc_object*, objc_class*) (in libobjc.A.dylib)
    6  0x00007fff8c005922 objc_destructInstance (in libobjc.A.dylib)
    7  0x00007fff8c005fa0 object_dispose (in libobjc.A.dylib)
    8  0x000000010d161995 __DVTSetupKVODeallocAssertions_block_invoke_371 (in DVTFoundation)
    9  0x00007fff865797fa -[NSResponder dealloc] (in AppKit)
   10  0x00007fff864af162 -[NSWindowController dealloc] (in AppKit)
   11  0x00007fff86623901 -[NSWindowController release] (in AppKit)
   12  0x00007fff867595b0 -[NSAutounbinder dealloc] (in AppKit)
   13  0x00007fff8c006230 (anonymous namespace)::AutoreleasePoolPage::pop(void*) (in libobjc.A.dylib)
   14  0x00007fff87a0cd72 _CFAutoreleasePoolPop (in CoreFoundation)
   15  0x00007fff8c52447a -[NSAutoreleasePool drain] (in Foundation)
   16  0x00007fff8657a27e -[NSApplication run] (in AppKit)
   17  0x00007fff8651ebd6 NSApplicationMain (in AppKit)
   18  0x00007fff91f377e1 start (in libdyld.dylib)
  
  abort() called
  
  Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
  0   libsystem_kernel.dylib          0x00007fff903ad212 __pthread_kill + 10
  1   libsystem_c.dylib               0x00007fff8a7fcb54 pthread_kill + 90
  2   libsystem_c.dylib               0x00007fff8a840dce abort + 143
  3   com.apple.dt.IDEKit             0x000000010e3a0a93 +[IDEAssertionHandler _handleAssertionWithLogString:reason:] + 763
  4   com.apple.dt.IDEKit             0x000000010e3a12ee -[IDEAssertionHandler handleFailureInMethod:object:fileName:lineNumber:messageFormat:arguments:] + 1117
  5   com.apple.dt.DVTFoundation      0x000000010d137655 _DVTAssertionHandler + 421
  6   com.apple.dt.DVTFoundation      0x000000010d137984 _DVTAssertionFailureHandler + 322
  7   com.apple.dt.DVTFoundation      0x000000010d20c6a6 _DVTInvalidation_DeallocSuper + 480
  8   com.apple.dt.IDEKit             0x000000010e33e2a3 -[IDESourceControlSSLAuthenticationWindowController .cxx_destruct] + 94
  9   libobjc.A.dylib                 0x00007fff8c00bfcc object_cxxDestructFromClass(objc_object*, objc_class*) + 100
  10  libobjc.A.dylib                 0x00007fff8c005922 objc_destructInstance + 91
  11  libobjc.A.dylib                 0x00007fff8c005fa0 object_dispose + 22
  12  com.apple.dt.DVTFoundation      0x000000010d161995 __DVTSetupKVODeallocAssertions_block_invoke_371 + 264
  13  com.apple.AppKit                0x00007fff865797fa -[NSResponder dealloc] + 129
  14  com.apple.AppKit                0x00007fff864af162 -[NSWindowController dealloc] + 616
  15  com.apple.AppKit                0x00007fff86623901 -[NSWindowController release] + 159
  16  com.apple.AppKit                0x00007fff867595b0 -[NSAutounbinder dealloc] + 51
  17  libobjc.A.dylib                 0x00007fff8c006230 (anonymous namespace)::AutoreleasePoolPage::pop(void*) + 464
  18  com.apple.CoreFoundation        0x00007fff87a0cd72 _CFAutoreleasePoolPop + 34
  19  com.apple.Foundation            0x00007fff8c52447a -[NSAutoreleasePool drain] + 154
  20  com.apple.AppKit                0x00007fff8657a27e -[NSApplication run] + 736
  21  com.apple.AppKit                0x00007fff8651ebd6 NSApplicationMain + 869
  22  libdyld.dylib                   0x00007fff91f377e1 start + 1
  
  Thread 1:: Dispatch queue: com.apple.libdispatch-manager
  0   libsystem_kernel.dylib          0x00007fff903add16 kevent + 10
  1   libdispatch.dylib               0x00007fff8641cdea _dispatch_mgr_invoke + 883
  2   libdispatch.dylib               0x00007fff8641c9ee _dispatch_mgr_thread + 54
  
  Thread 2:: com.apple.NSURLConnectionLoader
  0   libsystem_kernel.dylib          0x00007fff903ab686 mach_msg_trap + 10
  1   libsystem_kernel.dylib          0x00007fff903aac42 mach_msg + 70
  2   com.apple.CoreFoundation        0x00007fff87a0c233 __CFRunLoopServiceMachPort + 195
  3   com.apple.CoreFoundation        0x00007fff87a11916 __CFRunLoopRun + 1078
  4   com.apple.CoreFoundation        0x00007fff87a110e2 CFRunLoopRunSpecific + 290
  5   com.apple.Foundation            0x00007fff8c501546 +[NSURLConnection(Loader) _resourceLoadLoop:] + 356
  6   com.apple.Foundation            0x00007fff8c55f562 __NSThread__main__ + 1345
  7   libsystem_c.dylib               0x00007fff8a7fb7a2 _pthread_start + 327
  8   libsystem_c.dylib               0x00007fff8a7e81e1 thread_start + 13
  
  Thread 3:
  0   libsystem_kernel.dylib          0x00007fff903ab686 mach_msg_trap + 10
  1   libsystem_kernel.dylib          0x00007fff903aac42 mach_msg + 70
  2   com.apple.CoreFoundation        0x00007fff87a0c233 __CFRunLoopServiceMachPort + 195
  3   com.apple.CoreFoundation        0x00007fff87a11916 __CFRunLoopRun + 1078
  4   com.apple.CoreFoundation        0x00007fff87a110e2 CFRunLoopRunSpecific + 290
  5   com.apple.DTDeviceKitBase       0x000000011466875a -[DTDKRemoteDeviceDataListener listenerThreadImplementation] + 164
  6   com.apple.Foundation            0x00007fff8c55f562 __NSThread__main__ + 1345
  7   libsystem_c.dylib               0x00007fff8a7fb7a2 _pthread_start + 327
  8   libsystem_c.dylib               0x00007fff8a7e81e1 thread_start + 13
  
  Thread 4:: com.apple.CFSocket.private
  0   libsystem_kernel.dylib          0x00007fff903ad322 __select + 10
  1   com.apple.CoreFoundation        0x00007fff87a50f46 __CFSocketManager + 1302
  2   libsystem_c.dylib               0x00007fff8a7fb7a2 _pthread_start + 327
  3   libsystem_c.dylib               0x00007fff8a7e81e1 thread_start + 13
  
  Thread 5:: DYMobileDeviceManager
  0   libsystem_kernel.dylib          0x00007fff903ab686 mach_msg_trap + 10
  1   libsystem_kernel.dylib          0x00007fff903aac42 mach_msg + 70
  2   com.apple.CoreFoundation        0x00007fff87a0c233 __CFRunLoopServiceMachPort + 195
  3   com.apple.CoreFoundation        0x00007fff87a11916 __CFRunLoopRun + 1078
  4   com.apple.CoreFoundation        0x00007fff87a110e2 CFRunLoopRunSpecific + 290
  5   com.apple.Foundation            0x00007fff8c5647ee -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 268
  6   com.apple.Foundation            0x00007fff8c4fd1aa -[NSRunLoop(NSRunLoop) run] + 74
  7   com.apple.GPUToolsMobileFoundation  0x0000000118afe9bb -[DYMobileDeviceManager _deviceNotificationThread:] + 132
  8   com.apple.Foundation            0x00007fff8c55f562 __NSThread__main__ + 1345
  9   libsystem_c.dylib               0x00007fff8a7fb7a2 _pthread_start + 327
  10  libsystem_c.dylib               0x00007fff8a7e81e1 thread_start + 13
  
  Thread 6:: CVDisplayLink
  0   libsystem_kernel.dylib          0x00007fff903ad0fa __psynch_cvwait + 10
  1   libsystem_c.dylib               0x00007fff8a7fffe9 _pthread_cond_wait + 869
  2   com.apple.CoreVideo             0x00007fff8b5872a1 CVDisplayLink::runIOThread() + 689
  3   com.apple.CoreVideo             0x00007fff8b586fd7 startIOThread(void*) + 148
  4   libsystem_c.dylib               0x00007fff8a7fb7a2 _pthread_start + 327
  5   libsystem_c.dylib               0x00007fff8a7e81e1 thread_start + 13
  
  Thread 7:
  0   libsystem_kernel.dylib          0x00007fff903ad0fa __psynch_cvwait + 10
  1   libsystem_c.dylib               0x00007fff8a7fffe9 _pthread_cond_wait + 869
  2   com.apple.Xcode.DevToolsCore    0x0000000113436166 -[XCBlockQueue _processBlocksInThreadSlotNumber:] + 506
  3   com.apple.Foundation            0x00007fff8c55f562 __NSThread__main__ + 1345
  4   libsystem_c.dylib               0x00007fff8a7fb7a2 _pthread_start + 327
  5   libsystem_c.dylib               0x00007fff8a7e81e1 thread_start + 13
  
  Thread 8:
  0   libsystem_kernel.dylib          0x00007fff903ad0fa __psynch_cvwait + 10
  1   libsystem_c.dylib               0x00007fff8a7fffe9 _pthread_cond_wait + 869
  2   com.apple.Xcode.DevToolsCore    0x0000000113436166 -[XCBlockQueue _processBlocksInThreadSlotNumber:] + 506
  3   com.apple.Foundation            0x00007fff8c55f562 __NSThread__main__ + 1345
  4   libsystem_c.dylib               0x00007fff8a7fb7a2 _pthread_start + 327
  5   libsystem_c.dylib               0x00007fff8a7e81e1 thread_start + 13
  
  Thread 9:
  0   libsystem_kernel.dylib          0x00007fff903ad0fa __psynch_cvwait + 10
  1   libsystem_c.dylib               0x00007fff8a7fffe9 _pthread_cond_wait + 869
  2   com.apple.Xcode.DevToolsCore    0x0000000113436166 -[XCBlockQueue _processBlocksInThreadSlotNumber:] + 506
  3   com.apple.Foundation            0x00007fff8c55f562 __NSThread__main__ + 1345
  4   libsystem_c.dylib               0x00007fff8a7fb7a2 _pthread_start + 327
  5   libsystem_c.dylib               0x00007fff8a7e81e1 thread_start + 13
  
  Thread 10:
  0   libsystem_kernel.dylib          0x00007fff903ad6d6 __workq_kernreturn + 10
  1   libsystem_c.dylib               0x00007fff8a7fdf4c _pthread_workq_return + 25
  2   libsystem_c.dylib               0x00007fff8a7fdd13 _pthread_wqthread + 412
  3   libsystem_c.dylib               0x00007fff8a7e81d1 start_wqthread + 13
  
  Thread 11:
  0   libsystem_kernel.dylib          0x00007fff903ad6d6 __workq_kernreturn + 10
  1   libsystem_c.dylib               0x00007fff8a7fdf4c _pthread_workq_return + 25
  2   libsystem_c.dylib               0x00007fff8a7fdd13 _pthread_wqthread + 412
  3   libsystem_c.dylib               0x00007fff8a7e81d1 start_wqthread + 13
  
  Thread 12:
  0   libsystem_kernel.dylib          0x00007fff903ad6d6 __workq_kernreturn + 10
  1   libsystem_c.dylib               0x00007fff8a7fdf4c _pthread_workq_return + 25
  2   libsystem_c.dylib               0x00007fff8a7fdd13 _pthread_wqthread + 412
  3   libsystem_c.dylib               0x00007fff8a7e81d1 start_wqthread + 13
  
  Thread 13:
  0   libsystem_kernel.dylib          0x00007fff903ad6d6 __workq_kernreturn + 10
  1   libsystem_c.dylib               0x00007fff8a7fdf4c _pthread_workq_return + 25
  2   libsystem_c.dylib               0x00007fff8a7fdd13 _pthread_wqthread + 412
  3   libsystem_c.dylib               0x00007fff8a7e81d1 start_wqthread + 13
  
  Thread 14:
  0   libsystem_kernel.dylib          0x00007fff903ad6d6 __workq_kernreturn + 10
  1   libsystem_c.dylib               0x00007fff8a7fdf4c _pthread_workq_return + 25
  2   libsystem_c.dylib               0x00007fff8a7fdd13 _pthread_wqthread + 412
  3   libsystem_c.dylib               0x00007fff8a7e81d1 start_wqthread + 13
  
  Thread 15:
  0   libsystem_kernel.dylib          0x00007fff903ad6d6 __workq_kernreturn + 10
  1   libsystem_c.dylib               0x00007fff8a7fdf4c _pthread_workq_return + 25
  2   libsystem_c.dylib               0x00007fff8a7fdd13 _pthread_wqthread + 412
  3   libsystem_c.dylib               0x00007fff8a7e81d1 start_wqthread + 13
  
  Thread 16:
  0   libsystem_kernel.dylib          0x00007fff903ab686 mach_msg_trap + 10
  1   libsystem_kernel.dylib          0x00007fff903aac42 mach_msg + 70
  2   com.apple.CoreFoundation        0x00007fff87a0c233 __CFRunLoopServiceMachPort + 195
  3   com.apple.CoreFoundation        0x00007fff87a11916 __CFRunLoopRun + 1078
  4   com.apple.CoreFoundation        0x00007fff87a110e2 CFRunLoopRunSpecific + 290
  5   com.apple.DebugSymbols          0x00007fff8728a590 SpotlightQueryThread(void*) + 356
  6   libsystem_c.dylib               0x00007fff8a7fb7a2 _pthread_start + 327
  7   libsystem_c.dylib               0x00007fff8a7e81e1 thread_start + 13
  
  Thread 17:
  0   libsystem_kernel.dylib          0x00007fff903ad386 __semwait_signal + 10
  1   libsystem_c.dylib               0x00007fff8a885800 nanosleep + 163
  2   com.apple.CoreSymbolication     0x00007fff8fee2358 0x7fff8fecc000 + 90968
  3   libsystem_c.dylib               0x00007fff8a7fb7a2 _pthread_start + 327
  4   libsystem_c.dylib               0x00007fff8a7e81e1 thread_start + 13
  
  Thread 0 crashed with X86 Thread State (64-bit):
    rax: 0x0000000000000000  rbx: 0x0000000000000006  rcx: 0x00007fff52b72108  rdx: 0x0000000000000000
    rdi: 0x0000000000000c07  rsi: 0x0000000000000006  rbp: 0x00007fff52b72130  rsp: 0x00007fff52b72108
     r8: 0x00007fff769b7278   r9: 0x0000000000000141  r10: 0x0000000020000000  r11: 0x0000000000000206
    r12: 0x00007fff52b72248  r13: 0x000000010ea71680  r14: 0x00007fff769b8180  r15: 0x00007fff52b721f0
    rip: 0x00007fff903ad212  rfl: 0x0000000000000206  cr2: 0x00007f86d883a400
  Logical CPU: 0
  </code></pre>