Let me start by saying I'm new to both ReSharper and dotCover and that I'm using v10.0.2 of both.
The attached screenshot shows solution explorer in VS and the coverage tree for a set of tests.
Whenever I run coverage, it always shows the same subset of assemblies in the coverage tree. Importantly, all of the tests shown are for code in either the Services or Infrastructure assemblies, neither of which show in the coverage tree.
Clearly, the product is not doing something right or I'm not.
EDIT If it makes any difference, I'm using xUnit and have the xUnit running extension installed in ReSharper and the tests themselves run just fine.
This is due to shadow copying - when enabled, dotCover expects .pdb files to be copied too, and the standard shadow copy that xunit performs doesn't do this. If you disable shadow copy in the Unit Testing options page, it'll work fine. I think the xunit runner can be updated to fix this.
The YouTrack issue that describes what's going on is here: DCVR-7976