I'm reinstalling my mods after deleting the entire Mods folder. I did this, but for some reason the mod isn't showing up in game:
I'm having a hard time reading the text in your picture but it looks like your Resource.cfg is wrong. It should just be Resource.cfg. Do this:
1. Move that mods folder out to your Desktop or elsewhere.
2. Download this:
http://chii.modthesims.info/FrameworkSetup.zip -- This is the framework from ModTheSims
3. Unzip this FrameworkSetup.zip in your Sims Folder (just to be extra clear: /Users/<username>/Documents/Electronic Arts/The Sims 3/ ). This will add the Mods Folder, with the proper Resource.cfg file, as well as Mods\Packages, which includes a NoIntromod and a NoBuildSparkles mod.
Now, to test the Mods folder, start your game. If you have done this correctly, you will not see the EA intro video, with all the plumbobs etc. Your game will skip straight to the loading screen. If you do see the video, you probably didn't unzip the file to the right folder.
If you didn't see the video, shut down the game, and add StoryProgression (make sure you unzipped it properly) to your Mods\Packages folder. You can delete the NoIntro and NoBuildSparkles mods if you don't want them.