Visual Studio instance selection
If VS update 3 and update 4 preview are installed, running find_boost in cmake in either the update 3 or update 4 terminals works correctly. However running cmake-gui on the same project, even if previously generated using the cmake command line interface, produces wrong search names for the boost libraries (they lack the lib prefix among other issues). This causes find_boost to spuriously fail, but only if used from the gui. This is pretty bizarre.