ASSERTION FAILURE in /SourceCache/IDEInterfaceBuilderCocoaTouch/IDEInterfaceBuilderCocoaTouch-301/IB Plugin/Utilities/IBObjectMarshalling.m:136
Details: Interface Builder encountered an error communicating with the iOS Simulator. "Interface Builder Cocoa Touch Tool" (29267) 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<IBCocoaTouchToolProtocol> *IBAttachToCocoaTouchTool(IBCocoaTouchTargetRuntime *)
Thread: <NSThread: 0x200020700>{name = (null), num = 1}
Hints: None
Backtrace:
0 0x000000010094c9c7 -[IDEAssertionHandler handleFailureInFunction:fileName:lineNumber:messageFormat:arguments:] (in IDEKit)
1 0x0000000100060738 _DVTAssertionHandler (in DVTFoundation)
2 0x0000000100070394 _DVTAssertionFailureHandler (in DVTFoundation)
3 0x0000000118d57a48 IBAttachToCocoaTouchTool (in IDEInterfaceBuilderCocoaTouchIntegration)
4 0x0000000118d575f0 IBAskClassInTargetRuntimeForValueForKeyPathUsingResultMarshallerWithContext (in IDEInterfaceBuilderCocoaTouchIntegration)
5 0x0000000118d574a5 IBAskClassInTargetRuntimeForValueForKeyPathUsingResultMarshallerWithContext (in IDEInterfaceBuilderCocoaTouchIntegration)
6 0x0000000118d56f8b IBUserPresentableStringForTargetedDeviceFamily (in IDEInterfaceBuilderCocoaTouchIntegration)
7 0x0000000118d6eff0 IBIPhoneOSSdkToDeploymentTargetMapping (in IDEInterfaceBuilderCocoaTouchIntegration)
8 0x0000000118d6f038 IBIPhoneOSSdkToDeploymentTargetMapping (in IDEInterfaceBuilderCocoaTouchIntegration)
9 0x0000000118d73a02 IBUIControlEventTypeToUIControlEventMask (in IDEInterfaceBuilderCocoaTouchIntegration)
10 0x000000011864328b -[NSView(IBViewIntegration) ibWarnings:forDocument:withComputationContext:] (in IDEInterfaceBuilderKit)
11 0x0000000118a118cf -[NSView(IBAppKitViewIntegration) ibSwizzledNSViewWarnings:forDocument:withComputationContext:] (in IDEInterfaceBuilderCocoaIntegration)
12 0x0000000118d8b589 IBUIViewSizeToFillView (in IDEInterfaceBuilderCocoaTouchIntegration)
13 0x0000000118d929bd IBMakeBarButtonItemFromPasteboardView (in IDEInterfaceBuilderCocoaTouchIntegration)
14 0x0000000118daad8f IBIsContainedBarButtonItem (in IDEInterfaceBuilderCocoaTouchIntegration)
15 0x00000001185f3d5e -[IBDocument rebuildWarnings] (in IDEInterfaceBuilderKit)
16 0x00000001185f3f85 -[IBDocument warnings] (in IDEInterfaceBuilderKit)
17 0x000000011869a0ff -[IBIssueProvider updateWarningsForOpenDocument:filePath:] (in IDEInterfaceBuilderKit)
18 0x00000001185dfd0a -[IBIssueProvider updateOpenDocuments] (in IDEInterfaceBuilderKit)
19 0x00007fff840ce36a NSKeyValueDidChange (in Foundation)
20 0x00007fff840b1a9d -[NSObject(NSKeyValueObserverNotification) didChangeValueForKey:] (in Foundation)
21 0x000000010089d576 -[IDEDocumentController addDocument:] (in IDEKit)
22 0x00000001008c4052 +[IDEDocumentController retainEditorDocument:] (in IDEKit)
23 0x00000001008c3498 +[IDEDocumentController _retainedNewEditorDocumentWithClass:ofURL:ofType:extension:error:] (in IDEKit)
24 0x00000001008c31bc -[IDEEditorContext _newEditorDocumentWithClass:ofURL:ofType:extension:] (in IDEKit)
25 0x00000001008c2d05 -[IDEEditorContext _openNavigableItem:documentExtension:] (in IDEKit)
26 0x000000010088e50f -[IDEEditorContext _openNavigableItem:] (in IDEKit)
27 0x00000001008c2033 -[IDEEditorContext _notifyDelegateAndOpenNavigableItem:documentExtensionIdentifier:locationToSelec t:annotationRepresentedObject:stateDictionary:annotationWantsIndicatorAnimation: exploreAnnotationRepresentedObject:] (in IDEKit)
28 0x00000001008be678 -[IDEEditorContext _notifyDelegateAndOpenEditorOpenSpecifier:updateHistory:] (in IDEKit)
29 0x00000001008be453 -[IDEEditorContext _openEditorOpenSpecifier:updateHistory:] (in IDEKit)
30 0x00000001008be15e -[IDEEditorContext openEditorOpenSpecifier:] (in IDEKit)
31 0x00000001008be13b -[IDEEditorModeViewController openEditorOpenSpecifier:editorContext:] (in IDEKit)
32 0x00000001008be0f9 -[IDEEditorArea _openEditorOpenSpecifier:editorContext:takeFocus:] (in IDEKit)
33 0x0000000100944bcb __108+[IDEEditorCoordinator _doOpenEditorOpenSpecifier:forWorkspaceTabController:editorContext:target:takeF ocus:]_block_invoke_0 (in IDEKit)
34 0x0000000100943f81 __94+[IDEEditorCoordinator _doOpenIn_NewWindow_withWorkspaceTabController:documentURL:usingBlock:]_block_i nvoke_0 (in IDEKit)
35 0x00007fff840d233c __NSFireDelayedPerform (in Foundation)
36 0x00007fff85e51be8 __CFRunLoopRun (in CoreFoundation)
37 0x00007fff85e4fdbf CFRunLoopRunSpecific (in CoreFoundation)
38 0x00007fff8054e7ee RunCurrentEventLoopInMode (in HIToolbox)
39 0x00007fff8054e5f3 ReceiveNextEventCommon (in HIToolbox)
40 0x00007fff8054e4ac BlockUntilNextEventMatchingListInMode (in HIToolbox)
41 0x00007fff8205deb2 _DPSNextEvent (in AppKit)
42 0x00007fff8205d801 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] (in AppKit)
43 0x00007fff8202368f -[NSApplication run] (in AppKit)
44 0x00007fff8201c3b0 NSApplicationMain (in AppKit)
45 0x0000000100000eec
Can someone pleaseeeee ehelp mee.e I cant even develp anything as i cant open the interface builder