I've figured it out. Apparently CMAR's XCAS (body sliders) is a coremod. I removed it and was able to start my game. Unfortunately, that mod hasn't been updated since 2016 and it doesn't look likely that it will be anytime soon - so I guess I will have to play without. Very disappointing as I relied on those body sliders a lot for customization. I wish I have never updated with this patch!
For those of you also having issues with the EA app after updating Error Trap, the following are also core mods that can throw the error message and prevent you from starting the game. If you have any of these they will have to be updated or removed completely :'(
NRaas ErrorTrap
NRaas UntranslatedKey (but there never was a 1.69 variant of this one, only 1.67)
CmarNYC's XCAS
Consort's 2X Weight/Fitness
Lizcandor's Asymmetrical Relationships
Simler90's Core Mod (not compatible with NRaas though)
AwesomeMod
@acartergirl3 Right, that's why I asked you to remove all non-NRaas mods, in case you had another core mod you didn't know about. And CMar passed away in late 2023, so unless someone else takes over her work, it's unlikely that her mods will ever be updated.
