Otherwise mods and custom content may not work.
Check to make sure you've got the Resource.cfg file in your mods folder. You will need the single custom content files to go through to test. Please Note: These methods -do not- help fix merged custom content files. Mods or custom content isn't installed correctly.
Resource.cfg file is not in the mods folder. Sims 3 - How-To: Fix Problems with Mods/CC Quick Link Index: – Tools to Help Troubleshoot – 50/50 Method – A Few Files at a Time – Via the Sims 3 Launcher – Nothing Else Is Working If your mods or custom content aren't showing up in-game or are having problems with them in some other way this may mean one or more of the following is true: 1.
