@Kenzieismysim Means that one of the mods you're using is causing the issue
Custom content can get outdated with patches. If it works when you remove your mods folder, then one or more mods/cc is no longer compatible with the game and you have to find those.
Use the 50/50 method:
http://modthesims.info/wiki.php?title=Game_Help:Finding_Problem_Custom_Content