i just tried like 6 cheats that are only in the 'extra cheats plugin dll" and none of them work since installing the new service pack for Windows 7... just to let all of you know, if you install the new service pack update for windows 7, that dll no longer works! and I doubt Maxis is going to update it... so even though is pisses me off, I am out of luck here, just a warning to all of you, don't plan on using the extra cheats mod if you installed the new service pack, because it won't work. just like PIMX, extra cheats mod is incompatible with the update as well, you'll be out of luck too...
Maybe you can help yourself by returning to the former state of your computer: system help, system restore. You probably know what I mean. I think I won't even try to install the update, although my computer is nagging me for a week already.
also, my computer (OS) has been acting like a "Windows Vista" since the update... Microsoft screwed up with Vista, and now they messed up Windows 7 as well!!!
I'd send off a scathing Customer Support request. If enough people do it, the DLL loading aspect of SC4 (Because I bet it's broken all SC4 DLL mods) will probably be restored.