I am the creator of the C&C Tiberian Dawn/Red Alert Redux Mod and the Realistic Weapon Mod for C&C Generals Zero Hour. You might also know me for pioneering a release of a Generals/Zero Hour Mod with enhanced revolutionary graphics! I have also been an assistant programmer and map designer for Vietnam Glory Obscured.
While the installer is usually pretty good about sending the files to the right place, be sure to click to verify your install directory is correct when it gets to that screen. The usual issue seen when it says "file not found" usually means the launcher is searching for a file that is not in the same folder, in this case the generals.exe from the game folder that the mod should have been installed to is not present meaning the mod was installed wrong.