@MarMarcin You can always delete the cache files in your Sims 3 game folder (in Documents\EA). These files will regenerate each time you load the game, and if you don't delete them regularly, stale data will build up and possibly cause glitches. If you add or remove a mod from your game folder, you need to delete the scriptCache.package file before the next time you play. While deleting the others is optional, it will never hurt your game. Here's the list of cache files again:
- CASPartCache.package
- compositorCache.package
- scriptCache.package
- simCompositorCache.package
- socialCache.package
There are other files that you can delete, if you want, but those five cache files are the most important ones. Here's a list of everything in your game folder:
https://sims3.crinrict.com/en/2011/01/faq-user-files.html
And I'm glad I could help. If you have any other questions, you know where to find me.