I have been using Xcode 4.2 for the past month without incident. Two days ago I went back into my project to add some navbars to my app. When I clicked on .XIB (Either one) xcode came crashing down.
I tried launching a new project but it ended up with the same exact result. I sudo deleted xcode in its entirety and did a fresh installation. Still the problem persists unfortunately I cannot upgrade to the latest Xcode because the only mac I have access to is a 2006 macbook that is not compatible with Mountain Lion.
Below is my error message when Xcode launches.
It seems to be a cocoa issue but I am at a loss.
ASSERTION FAILURE in /SourceCache/IDEInterfaceBuilderCocoaTouch/IDEInterfaceBuilderCocoaTouch-933/IBPlugin/Utilities/IBObjectMarshalling.m:179 Details: Interface Builder encountered an error communicating with the iOS Simulator. "Interface Builder Cocoa Touch Tool" (431) failed to launch and exited with status (null), signal 5. Please check Console.app for crash reports for "Interface Builder Cocoa Touch Tool" for further information. Function: NSDistantObject *IBAttachToCocoaTouchTool(IBCocoaTouchTargetRuntime *) Thread: {name = (null), num = 1} Hints: None Backtrace: 0 0x00000000008c184b -[IDEAssertionHandler handleFailureInFunction:fileName:lineNumber:messageFormat:arguments:] (in IDEKit) 1 0x0000000000061728 _DVTAssertionHandler (in DVTFoundation) 2 0x00000000000746db _DVTAssertionFailureHandler (in DVTFoundation) 3 0x000000001cfb7871 IBAttachToCocoaTouchTool (in IDEInterfaceBuilderCocoaTouchIntegration) 4 0x000000001cfb7332 IBAskClassInTargetRuntimeForValueForKeyPathUsingResultMarshallerWithContext (in IDEInterfaceBuilderCocoaTouchIntegration) 5 0x000000001cfb7118 IBAskClassInTargetRuntimeForValueForKeyPathUsingResultMarshallerWithContext (in IDEInterfaceBuilderCocoaTouchIntegration) 6 0x000000001cfb7087 IBAskClassInTargetRuntimeForValueForKeyPathUsingResultMarshaller (in IDEInterfaceBuilderCocoaTouchIntegration) 7 0x000000001cfb6b57 IBUserPresentableStringForTargetedDeviceFamily (in IDEInterfaceBuilderCocoaTouchIntegration) 8 0x000000001cfe5ace IBIPhoneOSSdkToDeploymentTargetMapping (in IDEInterfaceBuilderCocoaTouchIntegration) 9 0x000000001cfe5b22 IBIPhoneOSSdkToDeploymentTargetMapping (in IDEInterfaceBuilderCocoaTouchIntegration) 10 0x000000001cfec7cf IBUIControlEventTypeToUIControlEventMask (in IDEInterfaceBuilderCocoaTouchIntegration) 11 0x000000001ca4f44d -[NSView(IBViewIntegration) ibWarnings:forDocument:withComputationContext:] (in IDEInterfaceBuilderKit) 12 0x000000001cdec864 -[NSView(IBAppKitViewIntegration) ibSwizzledNSViewWarnings:forDocument:withComputationContext:] (in IDEInterfaceBuilderCocoaIntegration) 13 0x000000001d00fbb2 IBUIViewSizeToFillView (in IDEInterfaceBuilderCocoaTouchIntegration) 14 0x000000001d01a451 IBMakeBarButtonItemFromPasteboardView (in IDEInterfaceBuilderCocoaTouchIntegration) 15 0x000000001c9efb44 -[IBDocument rebuildWarnings] (in IDEInterfaceBuilderKit) 16 0x000000001c9efd4a -[IBDocument buildWarningsIfNeeded] (in IDEInterfaceBuilderKit) 17 0x000000001c9efdae -[IBDocument warnings] (in IDEInterfaceBuilderKit) 18 0x000000001caa305e -[IBIssueProvider updateWarningsForOpenDocument:filePath:] (in IDEInterfaceBuilderKit) 19 0x000000001c9c93e7 -[IBIssueProvider updateOpenDocuments] (in IDEInterfaceBuilderKit) 20 0x000000001caa2e85 __50-[IBIssueProvider initWithIssueManager:extension:]_block_invoke_051 (in IDEInterfaceBuilderKit) 21 0x00000000000210de -[DVTObservingBlockToken observeValueForKeyPath:ofObject:change:context:] (in DVTFoundation) 22 0x0000000096fe5acb NSKeyValueDidChange (in Foundation) 23 0x0000000096fca2b6 -[NSObject(NSKeyValueObserverNotification) didChangeValueForKey:] (in Foundation) 24 0x00000000007ec026 -[IDEDocumentController addDocument:] (in IDEKit) 25 0x000000000081104d +[IDEDocumentController retainEditorDocument:] (in IDEKit) 26 0x0000000000a00375 +[IDEDocumentController _retainedNewEditorDocumentWithClass:forURL:withContentsOfURL:ofType:extension:error:] (in IDEKit) 27 0x000000000081f0d0 +[IDEDocumentController _retainedEditorDocumentForURL:type:error:] (in IDEKit) 28 0x000000000081ef25 +[IDEDocumentController retainedEditorDocumentForNavigableItem:forUseWithWorkspaceDocument:error:] (in IDEKit) 29 0x0000000000910acd IDEUtilitySliceRetainedDocumentsForNavigableItems (in IDEKit) 30 0x00000000007e3cb6 -[IDEUtilityArea _rebuildStackWithNavigableItems:] (in IDEKit) 31 0x00000000007e30d0 -[IDEUtilityArea _rebuildCategoriesAndStack] (in IDEKit) 32 0x00000000007e2e23 __41-[IDEUtilityArea initWithNibName:bundle:]_block_invoke_0 (in IDEKit) 33 0x00000000001e7a55 -[DVTDelayedValidator doValidation:] (in DVTKit) 34 0x0000000096fff86c __NSFirePerformWithOrder (in Foundation) 35 0x0000000093db2dd2 __CFRunLoopDoObservers (in CoreFoundation) 36 0x0000000093d6eced __CFRunLoopRun (in CoreFoundation) 37 0x0000000093d6e3c4 CFRunLoopRunSpecific (in CoreFoundation) 38 0x0000000093d6e1f1 CFRunLoopRunInMode (in CoreFoundation) 39 0x0000000090447e04 RunCurrentEventLoopInMode (in HIToolbox) 40 0x0000000090447af5 ReceiveNextEventCommon (in HIToolbox) 41 0x0000000090447a3e BlockUntilNextEventMatchingListInMode (in HIToolbox) 42 0x00000000987c6595 _DPSNextEvent (in AppKit) 43 0x00000000987c5dd6 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] (in AppKit) 44 0x00000000987881f3 -[NSApplication run] (in AppKit) 45 0x0000000098780289 NSApplicationMain (in AppKit) 46 0x0000000000001f3d 47 0x0000000000000002
