CoreAudioToolbox.dll crash on 5.1 sound

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CoreAudioToolbox.dll crash on 5.1 sound

Ever since iTunes 9.1 was released I have been unable to enjoy 5.1 surround sound on iTunes. If i am watching something that has a 5.1 stream and select it iTunes crashes. This was never an issue before.

I have my audio going from optical out to my surround sound amp. No changes were made to the software on my machine except updating iTunes.

Ordinarily this wouldn't be too much of a problem but if i select 5.1 for an episode or film and iTunes crashes there is no going back. 5.1 then comes the default for that file and i cant play it.

Has anyone else seen this. I posted on neowin.net and found a few people running windows 7 64bit who have had the problem but i haven't heard much.

I was hoping that the recent update 9.1.1 would fix the problem. Its still the same. Probably because the both use the same version of the "CoreAudioToolbox.dll"

Faulting application name: iTunes.exe, version: 9.1.1.11, time stamp: 0x4bd38d58
Faulting module name: CoreAudioToolbox.dll, version: 7.9.2.0, time stamp: 0x4b8efb3c
Exception code: 0xc0000005
Fault offset: 0x0025bb7a
Faulting process id: 0x12b4
Faulting application start time: 0x01cae727c9c85360
Faulting application path: C:\Program Files (x86)\iTunes\iTunes.exe
Faulting module path: C:\Program Files (x86)\Common Files\Apple\Apple Application Support\CoreAudioToolbox.dll

Dell XPS Studio 8100, Windows 7, 64bit

Posted on Apr 28, 2010 4:34 PM

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Answer 1

b noir

Level 9

72,324 points

Apr 28, 2010 4:49 PM in response to matt0402

I was hoping that the recent update 9.1.1 would fix the problem. Its still the same. Probably because the both use the same version of the "CoreAudioToolbox.dll"

Yes, both the iTunes 9.1.0.79 and the (current) 9.1.1.11 installer bundles contain an Apple Application Support version 1.2.1 ... so your existing AAS wouldn't have been changed at all during the update, matt.

Working here on the assumption that you might have a dodgy CoreAudioToolBox.dll (since I haven't seen any similar reports either of similar trouble with 5.1 sound). If that's what is afoot we might make some progress if we swap out both your existing iTunes and your existing AAS. Given that you've got a 64-bit Windows, I'd try the procedure I describe to fizzylove in the following thread. (It was written for an earlier version of iTunes, but the basic principle is the same.)

http://discussions.apple.com/message.jspa?messageID=10918603#10918603

... any help with your 5.1 error?

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Answer 2

matt0402 Author

Level 1

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Apr 29, 2010 12:08 PM in response to b noir

Thanks for the help. I was so hopeful that would fix the problem. Unfortunately not. Followed everything you suggested to the letter but no change.

Faulting application name: iTunes.exe, version: 9.1.1.12, time stamp: 0x4bd8abf9
Faulting module name: CoreAudioToolbox.dll, version: 7.9.2.0, time stamp: 0x4b8efb3c
Exception code: 0xc0000005
Fault offset: 0x0025bb7a
Faulting process id: 0xee0
Faulting application start time: 0x01cae7ce06a788b8
Faulting application path: C:\Program Files (x86)\iTunes\iTunes.exe
Faulting module path: C:\Program Files (x86)\Common Files\Apple\Apple Application Support\CoreAudioToolbox.dll
Report Id: 80768ada-53c1-11df-a047-002564f7c3dd

http://www.neowin.net/forum/topic/889252-itunes-91/page _p_592431022&#entry592431022

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Answer 3

b noir

Level 9

72,324 points

Apr 30, 2010 2:47 PM in response to matt0402

Okay. Just doublechecking a comment from over at Neowin ... when you play content in a different user account on the PC, you still get the error?

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Answer 4

matt0402 Author

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Apr 30, 2010 4:31 PM in response to b noir

yeah - exactly the same thing. I have even tried doing what you described then creating a new user account, reinstalling and trying again - no joy at all 😟

The only denominating factor is the update to itunes. As soon as that came i lost 5.1. Windows seems to lay the blame quite heavily at CoreAudioToolbox.dll but it could be anything from my hardware straight through windows to itunes itself. I'm at a loss.

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Answer 5

b noir

Level 9

72,324 points

Apr 30, 2010 4:50 PM in response to matt0402

Systemwide issue ... well, that rules out a few things at least. (Not preference files or library files, or plug-ins.)

Maybe let's start from the bottom up.

If this is (at root) an issue with an *operating system* file, then an sfc /scannow might either fix the relevant file or give us some information on what files might be squiffy. For instructions, see the following Microsoft document:

[How to use the System File Checker tool to troubleshoot missing or corrupted system files on Windows Vista or on Windows 7|http://support.microsoft.com/kb/929833]

Does the scannow find/repair any trouble?

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Answer 6

May 16, 2010 5:19 PM in response to b noir

I am having the same problem. I am trying to play a video. It allows me to select surround sound. As soon as I do. Windows closes itunes. I have the latest version of itunes

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Answer 7

May 18, 2010 6:04 PM in response to matt0402

I just converted my win7 box into my htpc. I am having the same issue of itunes crashing when surround sound is selected. I have spent big bucks on the movies and tv shows and would hope they would work.

I have my digital out running to my surround sound receiver. It worked when my macmini was plugged in but not my win7 box. Any help would be awesome.

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Answer 8

arslangu

Level 1

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May 19, 2010 8:55 AM in response to Jason Lovo

just had the same issue, nothing changed on my pc lately, but as soon as i select surround sound in a movie it crashes. I might be wrong but i don't think the option of selecting sound type was there before. Any ideas on how to resolve it?

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Answer 9

May 20, 2010 12:56 AM in response to arslangu

Same thing happening to me, used to work fine, now it crashe as soon as I try to turn on surround sound.

"CoreAudioToolbox.dll" is what crash on my end too.

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Answer 10

Orkky

Level 1

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May 20, 2010 9:11 AM in response to Franky601

Same thing is happening here too. Very new PC, brand new installation of Windows 7 x64. Here are the specificatons if that makes any difference.

Intel i7 930
8GB of DDR3
2 x NVidia 280
Soundblaster X-fi

I am not stuck with having the file automatically being forced to 5.1 but if I select it, boom.

Problem signature:
Problem Event Name: APPCRASH
Application Name: iTunes.exe
Application Version: 9.1.1.12
Application Timestamp: 4bd8abf9
Fault Module Name: CoreAudioToolbox.dll
Fault Module Version: 7.9.2.0
Fault Module Timestamp: 4b8efb3c
Exception Code: c0000005
Exception Offset: 0025bb7a
OS Version: 6.1.7600.2.0.0.256.28
Locale ID: 1033
Additional Information 1: 0a9e
Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
Additional Information 3: 0a9e
Additional Information 4: 0a9e372d3b4ad19135b953a78882e789

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Answer 11

May 20, 2010 11:53 PM in response to Orkky

I sent a bug report to Apple about it; I also gave them a link to this post. I'll post back about it if I get an answer.

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Answer 12

yetipod2

Level 1

8 points

May 21, 2010 10:42 AM in response to matt0402

Same problem, new Windows 7 PC, click surround sound and Windows closes iTunes. 😟

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Answer 13

Chuckbuc

Level 1

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May 27, 2010 2:48 PM in response to matt0402

I've just discovered I have the same problem.
Found this on another thread

http://discussions.info.apple.com/thread.jspa?threadID=2389424&tstart=0

Re: 9.1 upgrade failure..
Posted: Apr 28, 2010 6:57 PM in response to: JohnRipon
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I FIXED MINE!! This is what I did:
1. Select "Start", "Run", and type "RegEdt32"(for VISTA "regedit"). Click OK.
2. Select HKEY LOCALMACHINE
3. In the menu, select "Edit", "Permissions". A dialog will come up.
4. Check "Allow" for "Read" and for "Full Control", then click OK
5. Expand HKEY LOCALMACHINE and repeat steps 3, 4 for the keys "Software" and "System"
6. Expand the "Software" key, and repeat steps 3, 4 for "Classes"
7. Expand the "Classes" key, and repeat steps 3, 4 for "Installer"
8. If you have made any changes in steps 1 through 7, skip to step 10. If you did not make any changes, continue with step 9.

9.Open the "Classes" key, and click on "Installer" . In the menu, click "Security", "Permissions." Click the button marked "Advanced." Check "Reset Permissions on all child objects.", then click OK

10. Close the registry editor
11. Reboot the computer

then run iTunes install again.

Is this the answer??

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Answer 14

Jun 9, 2010 9:31 PM in response to matt0402

I just upgraded to windows 7 and that is when I started to have this issue. In windows vista iTunes would work fine. Now no surround sound. I attempted the steps you mentioned but it is not working for me. Should I completely uninstall iTunes before attempting the procedure? Any help would b awesome.

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Answer 15

matt0402 Author

Level 1

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Jun 17, 2010 2:31 AM in response to matt0402

Well i had my hopes up when they released 9.2. I thought we might have surround sound back................. we dont. This *****. How can they have broken this since the release of 9.1 and still have it broken?

Faulting application name: iTunes.exe, version: 9.2.0.61, time stamp: 0x4c18061b
Faulting module name: CoreAudioToolbox.dll, version: 7.9.3.0, time stamp: 0x4bff36a9
Exception code: 0xc0000005
Fault offset: 0x0025ba7a
Faulting process id: 0x17c4
Faulting application start time: 0x01cb0dff09fbc81e
Faulting application path: C:\Program Files (x86)\iTunes\iTunes.exe
Faulting module path: C:\Program Files (x86)\Common Files\Apple\Apple Application Support\CoreAudioToolbox.dll
Report Id: 85fa83b2-79f2-11df-aa85-002564f7c3dd

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