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IB Error: "Can't delete something I don't contain"
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IB Error: "Can't delete something I don't contain"

  • Subject: IB Error: "Can't delete something I don't contain"
  • From: Maurice Kelly <email@hidden>
  • Date: Mon, 23 Jan 2012 07:35:17 +0000
I've encountered this error a number of times but it's proving trickier to work around this time.

I'm creating a Mac app using Xcode 4.2.1 (MAS version) and have Auto-Layout enabled. My app layout consists of a vertical Split View containing two subviews. One of the subviews is another Split View, this time horizontal. When I try to build I get the following error report:

2012-01-22 21:06:45.286 ibtoold[66758:b03] [MT] DVTAssertions: ASSERTION FAILURE in /SourceCache/IDEInterfaceBuilder/IDEInterfaceBuilder-1938/Framework/Document/IBDocument.m:3884
Details:  Can't delete something I don't contain
Object:   <IBCocoaDocument: 0x4016ffb00>
Method:   -removeObjects:
Thread:   <NSThread: 0x40010a220>{name = (null), num = 1}
Hints: None
Backtrace:
  0  0x00000001010de2d4 -[DVTAssertionHandler handleFailureInMethod:object:fileName:lineNumber:messageFormat:arguments:] (in DVTFoundation)
  1  0x00000001010de1a4 _DVTAssertionFailureHandler (in DVTFoundation)
  2  0x00000001008b8a6f -[IBDocument removeObjects:] (in IDEInterfaceBuilderKit)
  3  0x0000000103e94d29 -[NSView(IBAppKitViewIntegration) ibSwizzledNSViewBeginArchivingDocument:withContext:] (in IDEInterfaceBuilderCocoaIntegration)
  4  0x0000000100914cfd -[NSObject(IBFrameworkObjectIntegration) ibBeginArchivingDocument:withContext:] (in IDEInterfaceBuilderKit)
  5  0x0000000103ec7604 -[NSObject(IBAppKitObjectIntegration) ibSwizzledBeginArchivingDocument:withContext:] (in IDEInterfaceBuilderCocoaIntegration)
  6  0x0000000100917dfc -[NSView(IBViewIntegration) ibBeginArchivingDocument:withContext:] (in IDEInterfaceBuilderKit)
  7  0x0000000103e94d59 -[NSView(IBAppKitViewIntegration) ibSwizzledNSViewBeginArchivingDocument:withContext:] (in IDEInterfaceBuilderCocoaIntegration)
  8  0x0000000100914cfd -[NSObject(IBFrameworkObjectIntegration) ibBeginArchivingDocument:withContext:] (in IDEInterfaceBuilderKit)
  9  0x0000000103ec7604 -[NSObject(IBAppKitObjectIntegration) ibSwizzledBeginArchivingDocument:withContext:] (in IDEInterfaceBuilderCocoaIntegration)
 10  0x0000000100917dfc -[NSView(IBViewIntegration) ibBeginArchivingDocument:withContext:] (in IDEInterfaceBuilderKit)
 11  0x0000000103e94d59 -[NSView(IBAppKitViewIntegration) ibSwizzledNSViewBeginArchivingDocument:withContext:] (in IDEInterfaceBuilderCocoaIntegration)
 12  0x0000000100914cfd -[NSObject(IBFrameworkObjectIntegration) ibBeginArchivingDocument:withContext:] (in IDEInterfaceBuilderKit)
 13  0x0000000103ec7604 -[NSObject(IBAppKitObjectIntegration) ibSwizzledBeginArchivingDocument:withContext:] (in IDEInterfaceBuilderCocoaIntegration)
 14  0x0000000103edd023 -[NSWindowTemplate(IBWindowTemplateIntegration) ibBeginArchivingDocument:withContext:] (in IDEInterfaceBuilderCocoaIntegration)
 15  0x00000001008a9fca -[IBDocument willArchiveWithContext:] (in IDEInterfaceBuilderKit)
 16  0x0000000103e7d745 -[IBCocoaDocument compiledKeyedObjectsData:] (in IDEInterfaceBuilderCocoaIntegration)
 17  0x0000000103e7dadc -[IBCocoaDocument compiledPackageWithError:] (in IDEInterfaceBuilderCocoaIntegration)
 18  0x0000000100875d25 (in ibtoold)
 19  0x0000000100873413 (in ibtoold)
 20  0x0000000100873120 (in ibtoold)
 21  0x000000010087302c (in ibtoold)
 22  0x000000010087cd56 (in ibtoold)
 23  0x0000000100872baa (in ibtoold)
 24  0x0000000100873b8f (in ibtoold)
 25  0x0000000100871644 (in ibtoold)
Command /Developer/usr/bin/ibtool failed with exit code 255

Has anyone seen this error and knows what causes it/how to remedy it? Googling for the assertion message reveals nothing.

Is there anything else I can be doing from a diagnostic perspective to help myself?

Cheers,

Maurice


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