Xcode crash report whoa

Xcode crash report

Application Specific Information:
ProductBuildVersion: 4H127
ASSERTION FAILURE in /SourceCache/IDEInterfaceBuilder/IDEInterfaceBuilder-3084/Framework/Connections/Interface/IBConnectionPopUpMenu.m:388
Details:  Need a menu.
Function: NSMenuItem *IBPopUpConnectionMenuWithMenuItems(NSArray *, NSMenuItem *, NSEvent *, NSRect, BOOL, NSSet *, CGFloat, NSWindow *, NSColor *, NSColor *, NSColor *, NSColor *, id<IBConnectionPopUpMenuDelegate>)
Thread:   <NSThread: 0x40030a1e0>{name = (null), num = 1}
Hints:   None
Backtrace:
  0  0x000000010c77b249 -[IDEAssertionHandler handleFailureInFunction:fileName:lineNumber:messageFormat:arguments:] (in IDEKit)
  1  0x000000010ba2ec65 _DVTAssertionHandler (in DVTFoundation)
  2  0x000000010ba2ecf4 _DVTAssertionFailureHandler (in DVTFoundation)
  3  0x000000010f1cdf9c IBPopUpConnectionMenuWithMenuItems (in IDEInterfaceBuilderKit)
  4  0x000000010f205caa -[IBConnectionEndPointHandler connectionForConnectingFromObject:] (in IDEInterfaceBuilderKit)
  5  0x000000010f1d8691 -[IBConnectionManager beginOldSchoolConnectingFromObject:withEvent:inWindow:usingSourceLocator:] (in IDEInterfaceBuilderKit)
  6  0x000000010f1d889d -[IBConnectionManager beginOldSchoolConnectingFromEditorCanvasFrameController:initialEndPoint:withEvent:] (in IDEInterfaceBuilderKit)
  7  0x000000010f1586d9 -[IBEditorCanvasFrameController sendEvent:] (in IDEInterfaceBuilderKit)
  8  0x00007fff8f7ffbb1 -[NSWindow sendEvent:] (in AppKit)
  9  0x00007fff8f7fb674 -[NSApplication sendEvent:] (in AppKit)
 10  0x000000010c5f3dae -[IDEApplication sendEvent:] (in IDEKit)
 11  0x00007fff8f71124a -[NSApplication run] (in AppKit)
 12  0x00007fff8f6b5c06 NSApplicationMain (in AppKit)
 13  0x000000010b9a4b6f (in Xcode)
 14  0x000000010b9a4b00 (in Xcode)
 
objc[7505]: garbage collection is ON
abort() called

• (id)init;
  {
  self = [super init];

  [NSExceptionHandler defaultExceptionHandler].exceptionHandlingMask = (NSLogUncaughtExceptionMask | NSHandleUncaughtExceptionMask // uncaught exceptions on all non-main threads
  | NSLogUncaughtSystemExceptionMask | NSHandleUncaughtSystemExceptionMask // such as invalid memory accesses
  | NSLogUncaughtRuntimeErrorMask | NSHandleUncaughtRuntimeErrorMask // Obj-C runtime, like messages to freed objects
  | NSLogTopLevelExceptionMask | NSHandleTopLevelExceptionMask); // catch uncaught exception on the main thread, which are normally handled by NSApp;
  [NSExceptionHandler defaultExceptionHandler].delegate = self;

  [self performSelector:@selector(_checkForOldCrashReports) withObject:nil afterDelay:1.0];
  return self;
  }

char *crashreporter_info = NULL;
asm(".desc _crashreporter_info, 0x10");

• (BOOL)exceptionHandler:(NSExceptionHandler *)sender shouldHandleException:(NSException *)exception mask:(NSUInteger)aMask; // mask is NSLogMask, exception's userInfo has stack trace for key NSStackTraceKey
  {
  if (![exception isKindOfClass:[NSException class]]) {
  exception = [NSException exceptionWithName:@"thrown" reason:[exception description] userInfo:nil];
  } else if ([exception.name isEqualToString:NSAccessibilityException])
  return YES;

  [NSExceptionHandler defaultExceptionHandler].exceptionHandlingMask = 0;
  [NSExceptionHandler defaultExceptionHandler].delegate = nil;

  // example:
  // Application Specific Information:
  // objc[1017]: objc_exception_throw failed
  // *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NSURL initWithString:relativeToURL:]: nil string parameter'
  NSString exceptionReason = [NSString stringWithFormat:@"** Terminating app due to uncaught exception '%@', reason '*** %@'", exception.name, exception.reason];
  const char *crashReporterInfo = exceptionReason.UTF8String;
  crashreporter_info = malloc(strlen(crashReporterInfo) + 1);
  strcpy(crashreporter_info, crashReporterInfo);
  __builtin_trap();

  return NO; // NOTREACHED
  }