Can add the first project but the second will only "check out for browse". This worked correctly in earlier versions. We need this to work with SCM v13.

CA Harvest SCM VSIP plugin all supported versions
Visual Studio all supported versions

Learned that you need to select the folder the solution is in on the Explorer view, then right click on the folders in the lists view to add projects to the private solution.

In this case, he has the solution folder, and the proj files are 2 folder levels down. If you select the folder just above the folder where the proj file is, and it's not the folder containing the sln file you will see this problem.