Failed to launch error/Fully Black Screen when using CC

I finally updated this afternoon.  I am getting this same error as shown in the post above.  I removed my MOD folder, and the game loaded.  I have been trying to put my CC back into a new MODS folder.  However, this is not working well.  I had  a 132GB MODS folder this morning before I updated (29,072 files).  After the update, I have put back in 23.6GB (3,534 files), but everything else I try to put back in gives me this error.  I can't even get my clothes folder in.  I'm putting in a few files at a time (very few) but I keep getting this error.  What does it mean and how do I get my .package files back in the game.  Please advise.  BTW, I did run repair already.  Game unplayable with my MODS at this point.

I'm having the same problem. really regretting having updated to the 17 March patch. Thought the hotfix would "fix" everything but only my mods/script mods load just fine. Meanwhile, my cc (custom clothes, lashes, shoes, tattoos etc.) are giving me the Failed to Launch screen. Even when i loaded the game with everything in my mods folder, after the spinning plumbob, I got a black screen. Could only hear the game. Take all my cc out, but leave mods in, game loads properly but now my sims look crazy without their cc. I can play without mods but I will never play without cc. Going to uninstall and reinstall to see if it fixes anything. Really annoying how once I finally get my game to play and work properly, EA comes with an unnecessary update and ruins everything. I have generations of sims that I can't play with rn. #Pissed

Yep, dealing with the same issue too I put all my cc all my mods on my updated mods and nope it says failed to load. They’re gonna have to fix this issue Sims you’re about to lose me.