opencover ui code coverage results not showing coverage for my tests, but for other .dlls

As I am using VS 2015 professional, and code coverage is not available for me.
I was following this guide:
http://ift.tt/22nwqEX
Everything is fine except Step 3. It doesn't show my classes and methods, but some other .dlls. Screenshot:

Any suggestions why it is not showing code coverage for my methods?
Thanks