Strong Name Validation Failed

Question

Two machines. Both with .NET 3.5 and the VS 2008 VC++ SP1 redistributables

A single exe which uses two signed DLLs, one in C++/CLI and one in C#

The exe load

Answer 1

I fixed this by going to the Build menu (top pane) and say "Rebuild xxxProject.plugin" for that specific project only, contrary to building the entire solution.