The type initializer for 'DotNetOpenAuth.Logger' threw an exception - powershell

Question

My aim is to call Google Admin SDK Directory updates from PowerShell. I started out with a working .NET app and converted it into a class library (which I tested - it works). I load that in the module manifest with
RequiredAssemblies = #('My.GoogleAdminSDK.Directory.dll')
My Get-GoogleSDKUser function New-Objects my class and calls GetUser on it. And I get:
Exception calling "GetUser" with "1" argument(s): "The type initializer for
'DotNetOpenAuth.Logger' threw an exception."
At C:\WINDOWS\system32\WindowsPowerShell\v1.0\Modules\My.googleadminsdkdirectory.admin\My.GoogleA
dminSDKDirectory.Admin.psm1:56 char:9
+ $service.GetUser($googleUserName)
+ ~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [], MethodInvocationException
+ FullyQualifiedErrorId : TypeInitializationException
I've tried adding a config file for log4net which has produced an empty log file but that didn't help.
Note: in order to get this far, I had to add
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="System.Net.Http.Primitives" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="log4net" publicKeyToken="669e0ddf0bb1aa2a" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-1.2.12.0" newVersion="1.2.12.0" />
</dependentAssembly>
</assemblyBinding>
</runtime>
to powershell_ise.exe.config to prevent the error:
"Could not load file or assembly 'System.Net.Http.Primitives,
Version=1.5.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or
one of its dependencies. The system cannot find the file specified."
which is far from ideal.
EDIT
The InnerException for the PowerShell-calling-my-DLL version was:
Could not load file or assembly 'log4net, Version=1.2.10.0,
Culture=neutral, PublicKeyToken=1b44e1d426115821' or one of its
dependencies. The system cannot find the file specified.
It took a bit of digging to find the innerException. I had a bit of a ferret around and found suggestions to use Fuslogvw, so I tried that. I closed and re-opened PowerShell, started up Fusion Log Viewer (it's the first time I've used it) and found three entries for log4net. The descriptions are:
log4net
log4net, Version=1.2.12.0, Culture=neutral, PublicKeyToken=669e0ddf0bb1aa2a
log4net, Version=1.2.10.0, Culture=neutral, PublicKeyToken=1b44e1d426115821
When I open them up, the first two have 'The operation was successful.' as the second line of text. The third has 'The operation failed. Bind result: hr = 0x80070002. The system cannot find the file specified.'
When I dig into that log, I find:
LOG: Assembly download was successful. Attempting setup of file: C:\windows\system32\windowspowershell\v1.0\Modules\JLP.GoogleAdminSDKDirectory.Admin\log4net.dll
LOG: Entering run-from-source setup phase.
LOG: Assembly Name is: log4net, Version=1.2.12.0, Culture=neutral, PublicKeyToken=669e0ddf0bb1aa2a
WRN: Comparing the assembly name resulted in the mismatch: Build Number
ERR: The assembly reference did not match the assembly definition found.
I tried running it from Visual Studio again. There were also three entries in fuslogvw and the third had the same error. But there's nothing in the VS output to indicate a problem.

Answer 1

It turns out that the two versions of log4net with different PublicKeyTokens have caused problems for others. I've got it working by adding a verison of log4netwith PublicKeyToken=1b44e1d426115821 to the GAC and adding another bindingredirect to the config file because the versions didn't match.
You can find the log4net versions here. You'll see references to oldkey and newkey versions. The oldkey one has PublicKeyToken=1b44e1d426115821 so I simply ran
gacutil /i "C:\Users\Me\Downloads\log4net\log4net-1.2.12-bin-oldkey\log4net-1.2.12\b
in\net\4.0\release\log4net.dll"
to stick it in the GAC and added:
<dependentAssembly>
<assemblyIdentity name="log4net" publicKeyToken="1b44e1d426115821" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-1.2.12.0" newVersion="1.2.12.0" />
</dependentAssembly>
to the assemblyBindings in the config file.