Adding reference in Windows Store app

Hi all,
I'm trying to add library into my existing projects but I'm getting error in OnLaunched() in first line where PDFGlobal is called.

An exception of type 'System.TypeLoadException' occurred in abc.exe but was not handled in user code

Additional information: Requested Windows Runtime type 'RDPDFLib.pdf.PDFGlobal' is not registered.

I added full RDPDFLib project into my solution but also same happens with winmd

Can anyone help with this one?

Screenshot attached

Make sure to add RDPDFLIb.dll and RDPDFLIb.winmd for x86, x64 and arm.

what version of Visual Studio you are using?

I'm using VS 2015 with Update 3 for this project.
I added full VC++ project to my solution and referenced in in main project so not sure why I should add dll's.
Thanks!

Can you please send us a sample project that can be used to reproduce your issue?

Sure. Have a look on sample project below:

www.dropbox.com/s/x8jxpr45kyrzvtm/DocViewer.zip?dl=0

We have checked your sample project, it was missing the lib directory.
After adding it, we was able to build and run correctly the project.

You can find Your project with lib integrated here own.mobiles.it/index.php/s/bR3X7lHevEJkSVA