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

  • Subject: Re: HELP! My app crashes on startup, with a very weird stack trace.
  • From: Corbin Dunn <email@hidden>
  • Date: Tue, 02 Feb 2010 10:34:23 -0800
Oleg,

I think you are misinterpreting an exception being raised as a crash of your application. The bt's below are not crashes; they are exceptions being raised (and caught) by appkit's accessibility.

I understand that you have a problem with your app crashing -- do you have some actual crash reports? If so, reply with those to the list and we may be able to help you.

-corbin

On Feb 2, 2010, at 10:04 AM, Oleg Krupnov wrote:

> 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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      • From: Oleg Krupnov <email@hidden>
References: 
 >HELP! My app crashes on startup, with a very weird stack trace. (From: Oleg Krupnov <email@hidden>)

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