_GetProvisionedAppxPackages throws a 'FatalExecutionEngineError'

[Sherulez]

Hello,

I have an exception when I call this method DismApi._GetProvisionedAppxPackages(DismSession)
Other methods of the API seem to work. Even though I have not tried everything.
Since I'm really bad at managed code any help would be appreciated :)

Environnement :

VS - 2017(As Administrator) / WPF
.NET 4.6.1
Non-English W10 - 1803

Code :

DismApi.Initialize(DismLogLevel.LogErrors);
try
{
	using (DismSession onlineSession = DismApi.OpenOnlineSession())
	{
		DismApi._GetProvisionedAppxPackages(onlineSession)
	}
}
finally
{
	DismApi.Shutdown();
}

Thrown exception :

Thrown on : DismApi._GetProvisionedAppxPackages(onlineSession);

Managed Debugging Assistant 'FatalExecutionEngineError' :
Additional Information: The runtime has encountered a fatal error. The address of the error was at 0x7363c430, on thread 0x3ff8.
The error code is 0xc0000005. This error may be a bug in the CLR or in the unsafe or non-verifiable portions of user code.
Common sources of this bug include user marshaling errors for COM-interop or PInvoke, which may corrupt the stack.

dism.log :

[18092] [0x8007007b] FIOReadFileIntoBuffer:(1381): La syntaxe du nom de fichier, de répertoire ou de volume est incorrecte. | >> English <<: The syntax of the file, directory, or volume name is incorrect
[18092] [0xc142011c] UnmarshallImageHandleFromDirectory:(641)
[18092] [0xc142011c] WIMGetMountedImageHandle:(2897)

Edit :
I built the last master and I used the Nuget package in prerelease v.1.7.0-g and the same exeption is thrown in the ExtensionMethods.cs Class here :

public static T ToStructure<T>(this IntPtr ptr)
{
  return (T)Marshal.PtrToStructure(ptr, typeof(T));
}

[jeffkl]

I was able to repro this. I'll work on a fix.