In a pickle

sounds like your having a lot of issues. Im having a similar problem im not sure if its caused by mods or not but every time i go to play a household it sends me back to the world selection page. lmk if you find a solution I really don't want to delete all the mods :/

CAS items can be problematic. I would suggest taking out all mods and add them back a few at a time. They should be in folders based on the Creator. If not you should sort them that way first outside of the game folder. 

Backup your save if you want to preserve it and create a new save. This new save will not have any mods or CC so it will be small and load quicker. 

After that add back first mods such as MC command that you know are not broken, then add objects in folders, a few at a time. 

Each time the games loads without issues you can leave that folder in. If the game doesn't load you need to narrow down what is broken in those folders.

After object load other mods, a few at at a time in folders. All this will take time, so pace yourself and be patient. Good luck.

Sometimes cooking mods that have been updated will cause this issue if the recipes have changed. Other mods can also have issues. Try this: Open the household in "build mode" from the neighborhood screen. If the house loads it will tell you that certain objects have been removed. Save, and go back to the neighborhood and try loading it in live mode.

Alright! I'll sort out my mods and cc by creators and add them back slowly and see what that does.

Argh alright I definetly think its my game or something in my EA files that needs to be figured out :( I added a folder of about 5 cc items, the creater is FusionStyle so thats what I named the folder and added it to my mods and then the same error popped up where it told me that the cc/mod is corrput. But I cant possibly figure out what in my EA folder would be causing this to happen. I always check and delete my localthumbcache file if there's a game crash. I'm going to try to figure it out and let you guys know.

Alright, so, I really think iv'e done everythign i possibly can. I thought it was my laptop, it might be but im not sure, i went through literally everything, and nothing is working to fix my problem. I even made a new microsoft account to launch sims 4 and it popped up with a message about dlc unlockers. So i switched back to my main account, and i didnt get the dlc message but im just getting the same corrput error, so at this point i deleted the sims 4 and i saved my save files and put them somewhere safe until the game redownloads and im going to add them back, after that im going to add one cc item and see what happens, if it comes up with the same corrupt cc message I think it might just be my laptop at this point.

Wow! That is so weird, I did exactly what you said and that mod worked and showed up in my mods when the game started