[CC and Milestones, error code 110-578ef827] Stuck On Loading Screen Sims 4

msnijder30​  Do you get a lastexception file when trying to load the household?  Please delete any you currently have in Documents > Electronic Arts > The Sims 4, then trigger the error and look for a new one.  If you find one, you can open it and delete the first line of text, then attach it to a reply here; or copy the text and paste it into a reply.

I have the same issue. I am so gutted, I want to play but every time I load my save game file it loops me back to the world screen... Also, made a new sim and same problem :c

xQueenTora​  Please test with your Mods folder removed.  If it's happening in a new save, it's usually (although not always) mod-related.

I'm having the same issue I removed my mods and it worked but playing without mods is so boring

msnijder30​  Try adding this mod, and reenable script mods of course:

https://www.patreon.com/posts/mod-milestone-81237568

It is possible that the milestone issue is secondary to the main one, that this mod will fix the milestone issue but still not allow your save to load.  So if it doesn't help, please post a new LE.

Samanthap19​ Kerrybubbles​  If you cannot load just the one household, but others work, please post a lastexception.  If you can't load any household, and you're bounced back to the worlds select screen instead, please use this thread if removing or disabling mods helps:

When Loading Save, Game Returns to Neighborhood Select Screen | EA Forums - 12488560

And this thread if it doesn't, or you never used mods with this save:

Cannot Load Into Lots after Aug 19 Update | EA Forums - 12489119

For the latter, please provide the info requested in the OP, and a save.  It's critical to get more information from users with this particular issue that doesn't resolve when mods are removed.

msnijder30​  From what I've heard, you should be able to remove the milestone fix mod once you save your progress with it present.

The reason for this error, the one that the mod fixes, is that when a sim achieves a milestone, some data references what object they used to do so, for example a playmat.  If the object is custom content, and you remove the cc, you won't be able to load that household.  So you could also just put back your cc objects to fix the problem.

And to be clear, it's not that you need to keep the item on the lot.  The point is that the game has to load the object in general, like in the Build/Buy catalog.