I tested with OpenCover 4.6.519 (https://github.com/OpenCover/opencover/releases/tag/4.6.519
) and I was not able to reproduce the problem. I followed the documentation (http://www.telerik.com/help/justmock/integration-opencover.html
) and I managed to run an unit test with both JustMock and OpenCover enabled. Can you confirm that you linked properly JustMock and OpenCover profiler through Telerik.JustMock.Configuration.exe tool? You can start the tool from <JUSTMOCK_INSTALL_DIR>\Libraries or in Visual Studio through JustMock->Options menu.
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