How do I get diagnostic info for a crash?

[sicklittlemonkey]

Hi, I'm getting a crash in a deployed app (a Windows service) on Windows Server 2012 R2:

Faulting module name: Magick.Native-Q8-x86.dll, version: 7.0.9.0, time stamp: 0x5daf5416
Exception code: 0xc000001d
Faulting module path: C:\Windows\TEMP\Magick.NET.net40.7.14.5.0\Magick.Native-Q8-x86.dll

The code is just:

	using (MagickImage image = new MagickImage(imagePath))
	{
		image.Grayscale();
		var ct = image.DetermineColorType();
		image.Write(output);
	}

This one machine can reproduce the crash. I can't reproduce it and we've had no similar problems. I'm assuming it might be an OpenCL problem, but I'm not sure how to confirm that. Searching around I found mention of:
%LOCALAPPDATA%\ImageMagick\ImagemagickOpenCLDeviceProfile.xml
... but the support person looking into it couldn't find any such file.

Can I get that info from changing the config files such as log.xml, or is there a way to turn off OpenCL without a code change?

Cheers,
Nick.

[sicklittlemonkey]

Hmm, doesn't seem to be an OpenCL problem. Something about the DLL caching is corrupted.

Magick.Native-Q8-x86.dll!629b5cd3()
[Frames below may be incorrect and/or missing, no symbols loaded for Magick.Native-Q8-x86.dll]
ntdll.dll!_LdrxCallInitRoutine@16()
ntdll.dll!LdrpCallInitRoutine()
ntdll.dll!LdrpInitializeNode()
ntdll.dll!LdrpInitializeGraph()
ntdll.dll!LdrpPrepareModuleForExecution()
ntdll.dll!LdrpLoadDll()
KERNELBASE.dll!LoadLibraryExW()
[Managed to Native Transition]	
Magick.NET-Q8-AnyCPU.dll!ImageMagick.Environment.NativeEnvironment.SetEnv(string name, string value)
Magick.NET-Q8-AnyCPU.dll!ImageMagick.MagickNET.InitializePrivate(ImageMagick.Configuration.ConfigurationFiles configFiles, string newPath)
Magick.NET-Q8-AnyCPU.dll!ImageMagick.MagickNET.Initialize(ImageMagick.Configuration.ConfigurationFiles configFiles, string path)
Magick.NET-Q8-AnyCPU.dll!ImageMagick.NativeLibraryLoader.ExtractLibrary()
Magick.NET-Q8-AnyCPU.dll!ImageMagick.NativeLibraryLoader.Load()
Magick.NET-Q8-AnyCPU.dll!ImageMagick.Environment.NativeMethods.X86.X86()
[Native to Managed Transition]	
[Managed to Native Transition]	
Magick.NET-Q8-AnyCPU.dll!ImageMagick.Environment.NativeEnvironment.Initialize()
Magick.NET-Q8-AnyCPU.dll!ImageMagick.Environment.Initialize()
Magick.NET-Q8-AnyCPU.dll!ImageMagick.MagickSettings.NativeMagickSettings.NativeMagickSettings()
[Native to Managed Transition]	
[Managed to Native Transition]	
Magick.NET-Q8-AnyCPU.dll!ImageMagick.MagickSettings.MagickSettings()
Magick.NET-Q8-AnyCPU.dll!ImageMagick.MagickImage.MagickImage()

[dlemstra]

I would be surprised to see an OpenCL issue in a server environment. That will most likely happen on a desktop. From your stack trace I have two guesses:

1. For some reason a 32bit dll is being loaded in a 64bit environment but that doesn't look very likely.
2. The DLL embeded in the Magick.NET-Q8-AnyCPU.dll is not written to disk correctly or removed after it has been written. You could try using MagickAnyCPU.CacheDirectory to changed that directory.

And If you are only running this on a server I would advise you to switch from the AnyCPU version to either the x86 or the x64 version of the library.