In VS2012, I resolved a BadImageException from running a unit test by going to: TEST-> TEST SETTINGS -> DEFAULT PROCESSOR ARCHITECTURE -> x64.
This works in the built in
When working with high memory code you may find you need to alter the R# test runner config to include
You can find this file located at
%localappdata%\JetBrains\Installations\ReSharperPlatformVs12\
JetBrains.ReSharper.TaskRunner.CLR45.x64.exe.config
This path is likely dependudant upon Visual Studio version and may vary upon R# version. This specific path is Visual Studio 2013 with Resharper 9.1. Recurrent issue with Resharper 10. Location of config file is unchanged. https://youtrack.jetbrains.com/issue/RSRP-446178