We have a very large solution in VS 2013, and a few of the projects are C++ projects. NCrunch has no problem building them, except if they are located in a folder that contains a space in the name. The error we were seeing was:
"cmd.exe exited with code 9009"
I was trying to look at the logging output and realized the path had a space - renamed the folder to remove the space, and all is well.