The Spore ModAPI Launcher Kit has, on numerous occasions, proven extremely unreliable with the Steam version of Spore.
Open the Spore ModAPI Easy Uninstaller Select your undesired mod(s): Click 'Uninstall Selected' Enjoy. Open the Spore ModAPI Easy Installer Locate your desired mod: Click 'Open' Enjoy. It requires legally-purchased versions of both Spore and Spore Galactic Adventures and atleast Patch to be installed. The Spore ModAPI Launcher Kit is a toolkit which allows mods to influence Spore's code, granting mod developers greater control over Spore and its behaviour.