TypeLoadException when using Document.Create()

Hello, I've been struggling with this library since Yesterday morning because I can't load any document with it. Whenever I reach the instruction:

this.Document = Document.Create(Source, DocumentType.PDF, (int)ScreenManager.ScreenDpi);

the application crashes with TypeLoadException, InnerException: Interface not registered, HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG). Required Windows Runtime Type 'MuPDFWinRT.Document' is not registered.

I searched on the web for this issue and everything seemd to point to a misconfiguration in project properties but I think I created them correctly. (See configuration screen here: https://dl.dropboxusercontent.com/u/73691727/config.PNG)

In my project reference I checked the winmd file (not the dll). In fact if I try to add a reference to the dll I obtain an error: "Cannot add a reference to . Check if assembly or COM component is valid"

I'm aware that this is not a lib issue per-se but I think you're the only one who can light this up for me (and for other users who will eventually experience the issue in the future)

Thanks Giuseppe

MishaUliutin / MuPDF.WinRT

TypeLoadException when using Document.Create() #21