Mods are package based content and require a Framework to be installed first. Do you have other mods or package based content in play and are they working properly?
http://modthesims.info/wiki.php?title=Game_Help:Installing_Sims_3_Package_Files/Setup_and_Files
If so, after adding in the one package file (unzipped) for MasterController to Mods\Packages, have you cleared (deleted) the scriptCache.package file from the top level of your TS3 user game folder? And how do you know that MC is not working, are there no NRaas menus appearing on City Hall, sims or lots after the attempted install?