A missing managed library would be a DllNotFoundException. This is a FileLoadException. The HRESULT, 8009001D, is NTE_PROVIDER_DLL_FAIL. So apparently it's an unmanaged DLL that's failing to load, and the error doesn't say which. Given the lack of err:module output, I'd say the DLL is there but DllMain is failing. A +module log might help.
