Sims 4 Gallery Keeps Breaking

Hi @Avitricks . This is most often caused by an outdated mod, especially UI mods, and among UI mods, especially Color Sliders and 15 Clubs Per Sim. Update your UI mods to the most recent versions, and delete the file called localthumbcache. Also, make sure you've deleted old versions of the mods.

I updated all of my UI mods and that fixed it for a second. I download brand new CC and I put it in and it breaks again. Not sure what to really do anymore honestly (These are the mods I found out were breaking it for a while and I have redownloaded all of them, all of these mods have come out in the past 3 months)

Just took out the 'broken' folder. Deleted the localthumbcache and everything is broken again. 

Try checking your antivirus settings so they aren't blocking the Gallery.

But you may need to do a full 50-50 to find the content that's breaking the Gallery, given some of what you described happening:

Organizing the Mods files into bite-size batches (with any files they require, like XML Injector or a Core Library mod or mesh) and test one batch at a time. For each test, delete the file called localthumbcache, then put only that batch in Mods.

If your game behaves as you expect, set that batch aside as "cleared" and delete localthumbcache again.

If it doesn't behave as you expect, take out half the batch and see if you're closer to finding the culprit. Remember to delete localthumbcache each time.

Keep in mind that having duplicates of mods, having old and new versions, and having two mods that do the same thing can also cause problems. If, when you start putting multiple cleared batches back, you start getting problems again, there's some kind of duplicate or conflict issue happening.