Re: My sims 4 gallery is not working and I can’t finish a new sim with the checkmar

Unfortunately, there's nothing that a mods conflict detector can do that will reliably find problems. The most they can do is show you when two mods use the same bit of game code, and that can be absolutely not a problem.

If you find you need to narrow down the problem beyond what the lists can help with (the current list has a link to the previous one), you'll need to do a 50-50 on your Mods folder. This means organizing the files there into bite-size batches (with any files they require, like XML Injector or a Core Library mod or mesh) and testing 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. You'll find some 50-50 method tutorials online too. Once you isolate the file, you can go find out if there's an updated version.

Keep that one. Many other mods depend on it, and if it needed updating, I'd probably have heard so by now.