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Re: Incessant crashing on Windows 8 x64, all of a sudden

From: Ben Johnson <ben_at_indietorrent.org>
Date: Thu, 14 Nov 2013 09:26:19 -0500

On 11/13/2013 8:44 PM, Ben Johnson wrote:
> Thanks for the reply, Stefan. I sure do appreciate it.
> I looked through the list of issues that you cited and nothing there
> looks familiar.
> Is there a specific method that I should be undertaking to obtain a
> crash dump file? I have started with the steps described at
> http://msdn.microsoft.com/en-us/library/vstudio/3s68z0b3.aspx#BKMK_Attach_to_a_running_process
> .
> As soon as I attach to the running process, which is an instance of the
> Update dialog (after updating the working copy successfully), and then
> press "OK" to exit the dialog, the debugger complains:
> Unhandled exception at 0x000007FC05A75521 (ntdll.dll) in
> TortoiseProc.exe: 0xC0000005: Access violation reading location
> 0x000000006D724F3F.
> I click "Continue" but this dialog keeps coming up each time, indefinitely.
> The call stack looks like this (if it is at all helpful):
>> ntdll.dll!000007fc05a75521() Unknown
> bdmpega64.acm!00000001800029c4() Unknown
> bdmpega64.acm!00000001800014d8() Unknown
> winmmbase.dll!000007fbf6c0cf93() Unknown
> msacm32.dll!000007fbfb78193c() Unknown
> msacm32.dll!000007fbfb7816e2() Unknown
> msacm32.dll!000007fbfb7819c4() Unknown
> msacm32.dll!000007fbfb78196d() Unknown
> msacm32.dll!000007fbfb7811d3() Unknown
> ntdll.dll!000007fc05a8037f() Unknown
> ntdll.dll!000007fc05aa6080() Unknown
> ntdll.dll!000007fc05aa5f2c() Unknown
> kernel32.dll!000007fc0425445e() Unknown
> msvcr110.dll!000007fbf0353063() Unknown
> TortoiseProc.exe!000007f78ae5661d() Unknown
> kernel32.dll!000007fc04251832() Unknown
> ntdll.dll!000007fc05acd609() Unknown
> I run a "pretty tight ship" (which, I know, doesn't hold much water),
> and Avast finds no evidence of a virus on the machine.
> Is there a link/resource to which you could point me that contains
> detailed instructions for obtaining exactly the type of dump file that
> you require for analysis?
> Thanks again for your willingness to look into this.
> -Ben

Stefan, after doing a little more digging, I am eying that file near the
top of the call stack, "bdmpega64.acm", suspiciously.

When I search the Internet for that file, I see two results that stand-out:

1) A crash-report.com post that you made with the same file name, which
implies that this file has crashed TSVN for others.

2) A thread about Remote Desktop crashes that this file causes, which I
am also experiencing, but that I considered unrelated and irrelevant
until now.

The Remote Desktop crashing thread about this file states that the file
is usually part of Bandicam (never installed it) or oftentimes a video
game. Apparently, many games use this codec for in-game screen recording.

I have indeed installed a new game or two recently, which is probably
what is causing this. I will report back once I determine which game is
the culprit. I wouldn't spend any more of your time on this, as I can
probably find the solution myself.

Thanks again,



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Received on 2013-11-14 15:26:32 CET

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