As the title says, it would be nice, if the Projucer would check before copying a module path with “Set paths for all modules…” whether it will be a valid path. This is especially helpful if you have modules other than the standard ones lying in different paths.
I narrowed it down to Projucer - jucer_ModulesPanel.h - showSetPathsMenu(). I tried already with a ModuleDescription, but got lost in the forest of absolute and relative paths when using exporter->getPathForModuleString (moduleToCopy). So I leave it to the Pros