When I run the Cover option from the Green dot or from Resharper menu I get an exception window that appears before the Coverage starts. I can answer "No" to the prompt and everything works correctly after this.
Resharper / dotCover versions:
- JetBrains ReSharper Ultimate 2016.3.2 Build 107.0.20170126.120331
- dotCover 2016.3.20170126.121718
- Visual Studio Community edition