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HELP! My app crashes on startup, with a very weird stack trace.
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HELP! My app crashes on startup, with a very weird stack trace.

  • Subject: HELP! My app crashes on startup, with a very weird stack trace.
  • From: Oleg Krupnov <email@hidden>
  • Date: Tue, 2 Feb 2010 20:04:45 +0200
Hi,

After publishing an update of my app, I have received quite a few
crash dumps with very weird stack traces that I cannot understand and
fix.

Namely, the exception message says that AXTitle, or AXWindow or
AXValue or AXDocument etc. is unsupported by NSWindow, NSOpenPanel,
NSApplication and others. Does it have something to do with
accessibility? In what way?

If someone knows what's that supposed to mean, a quick response would
be very much appreciated. This is an emergency for me.

Here's one of those logs (All those users are running Snow Leopard 10.6.2):

MESSAGE:
"AXTitle" attribute unsupported by: <NSOpenPanel: 0x5bb190>

STACK TRACE:
#0  0x98b80d24 NSExceptionHandlerExceptionRaiser()
(/System/Library/Frameworks/ExceptionHandling.framework/Versions/A/ExceptionHandling)
#1  0x94bc5509 objc_exception_throw()  (/usr/lib/libobjc.A.dylib)
#2  0x97a91a21 +[NSException raise]
(/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation)
#3  0x91d9a55c NSAccessibilityAttributeValue()
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
#4  0x91fb243f CopyAppKitUIElementAttributeValueNoCatch()
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
#5  0x91fb49d7 CopyAttributeValue()
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
#6  0x9476bad3 _AXXMIGCopyAttributeValue()
(/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/HIServices.framework/Versions/A/HIServices)
#7  0x94775b96 _XCopyAttributeValue()
(/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/HIServices.framework/Versions/A/HIServices)
#8  0x94747c39 mshMIGPerform()
(/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/HIServices.framework/Versions/A/HIServices)
#9  0x979b28db __CFRunLoopRun()
(/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation)
#10 0x979b0864 CFRunLoopRunSpecific()
(/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation)
#11 0x979b0691 CFRunLoopRunInMode()
(/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation)
#12 0x973c9f0c RunCurrentEventLoopInMode()
(/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox)
#13 0x973c9cc3 ReceiveNextEventCommon()
(/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox)
#14 0x973c9b48 BlockUntilNextEventMatchingListInMode()
(/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox)
#15 0x91d4eac5 _DPSNextEvent()
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
#16 0x91d4e306 -[NSApplication
nextEventMatchingMask:untilDate:inMode:dequeue:]()
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
#17 0x13a2754b +[NSApplication
nextEventMatchingMask:untilDate:inMode:dequeue:]
(/Library/PreferencePanes/Smart Scroll.prefPane/Contents/MacOS/Smart
Scroll.bundle/Contents/MacOS/Smart Scroll)
#18 0x91d1049f +[NSApplication run]
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
#19 0x91d08535 NSApplicationMain()
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
#20 0x0022ca start()  (/Applications/DaisyDisk.app/Contents/MacOS/DaisyDisk)
#21 0x000002 ??()  (??)

Here is another:

MESSAGE:
"AXValue" attribute unsupported by: <NSButtonCell: 0x5cd0d0>

STACK TRACE:
#0  0x95d86d24 NSExceptionHandlerExceptionRaiser()
(/System/Library/Frameworks/ExceptionHandling.framework/Versions/A/ExceptionHandling)
#1  0x9212d509 objc_exception_throw()  (/usr/lib/libobjc.A.dylib)
#2  0x94dcba21 +[NSException raise]
(/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation)
#3  0x938de55c NSAccessibilityAttributeValue()
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
#4  0x93af643f CopyAppKitUIElementAttributeValueNoCatch()
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
#5  0x93af89d7 CopyAttributeValue()
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
#6  0x90b34ad3 _AXXMIGCopyAttributeValue()
(/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/HIServices.framework/Versions/A/HIServices)
#7  0x90b3eb96 _XCopyAttributeValue()
(/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/HIServices.framework/Versions/A/HIServices)
#8  0x90b10c39 mshMIGPerform()
(/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/HIServices.framework/Versions/A/HIServices)
#9  0x94cec8db __CFRunLoopRun()
(/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation)
#10 0x94cea864 CFRunLoopRunSpecific()
(/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation)
#11 0x94cea691 CFRunLoopRunInMode()
(/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation)
#12 0x98525f0c RunCurrentEventLoopInMode()
(/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox)
#13 0x98525bff ReceiveNextEventCommon()
(/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox)
#14 0x98525b48 BlockUntilNextEventMatchingListInMode()
(/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox)
#15 0x93892ac5 _DPSNextEvent()
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
#16 0x93892306 +[NSApplication
nextEventMatchingMask:untilDate:inMode:dequeue:]
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
#17 0x9385449f +[NSApplication run]
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
#18 0x9384c535 NSApplicationMain()
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
#19 0x0022ca start()  (/Applications/DaisyDisk.app/Contents/MacOS/DaisyDisk)
#20 0x000002 ??()  (??)

Here's yet another:

MESSAGE:
"AXValue" attribute unsupported by: <MainWindow: 0x227270>

STACK TRACE:
#0  0x95d86d24 NSExceptionHandlerExceptionRaiser()
(/System/Library/Frameworks/ExceptionHandling.framework/Versions/A/ExceptionHandling)
#1  0x9212d509 objc_exception_throw()  (/usr/lib/libobjc.A.dylib)
#2  0x94dcba21 +[NSException raise]
(/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation)
#3  0x938de55c NSAccessibilityAttributeValue()
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
#4  0x93af643f CopyAppKitUIElementAttributeValueNoCatch()
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
#5  0x93af89d7 CopyAttributeValue()
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
#6  0x90b34ad3 _AXXMIGCopyAttributeValue()
(/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/HIServices.framework/Versions/A/HIServices)
#7  0x90b3eb96 _XCopyAttributeValue()
(/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/HIServices.framework/Versions/A/HIServices)
#8  0x90b10c39 mshMIGPerform()
(/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/HIServices.framework/Versions/A/HIServices)
#9  0x94cec8db __CFRunLoopRun()
(/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation)
#10 0x94cea864 CFRunLoopRunSpecific()
(/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation)
#11 0x94cea691 CFRunLoopRunInMode()
(/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation)
#12 0x98525f0c RunCurrentEventLoopInMode()
(/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox)
#13 0x98525cc3 ReceiveNextEventCommon()
(/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox)
#14 0x98525b48 BlockUntilNextEventMatchingListInMode()
(/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox)
#15 0x93892ac5 _DPSNextEvent()
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
#16 0x93892306 +[NSApplication
nextEventMatchingMask:untilDate:inMode:dequeue:]
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
#17 0x9385449f +[NSApplication run]
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
#18 0x9384c535 NSApplicationMain()
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
#19 0x0022ca start()  (/Applications/DaisyDisk.app/Contents/MacOS/DaisyDisk)
#20 0x000002 ??()  (??)

Thanks!
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