Hi there, I recently got my first gaming computer (Lenovo Legion Pro 7) and installed the full Sims 3 collection the same way I did on my other computers and then dragged over my old saves and mods. It has a Geforce RTX 4070 graphics and Intel Core i9 processor, and at first the game wouldn't start but I found a fix to that using the Intel Alderlake Patch.

Then my old saves wouldn't open even though they were working perfectly well on my other computer (says serious error has occurred) and I tried the obvious fixes for that but it didn't work. Now my new game that I made is coming up with Error Code 16 when I try to save. I updated my drivers and Windows, reinstalled, reset the world, deleted caches, ran as administrator, and tried save as and deleting the bad files but it keeps coming up and I have to just retry throughout the day until it eventually works.Also in the new game I'm noticing corruption that would normally only happen in a really old and huge save: items disappearing, Sims randomly resetting, options and commands disappearing, and freezes/crashes. Any help would really be appreciated, I'm so lucky this forum exists because I have no idea what to do, thank you guys!

I've seen Igazor mention before that this is likely caused by Onedrive caching the Documents folder online in it's cloud, which interferes with Sims3's ability to save and load it. Try disabling Onedrive and see if that works.

Hey, forgot to mention this but I did disable Onedrive and it didn't work.

Did you patch your game?
Installed everything via launcher again, also worlds?
What kind installion do you have?

Maybe puzzlezaddict knows more.

i think we can conclude from this thread at MTS that the OP has resolved the issue.

Thank you guys and wow good eye igazor! Finally got rid of Error Code 16, but I am having some regular crashing/freezing. Any tips for avoiding this on new machines?

First and foremost I would ask are you using smooth path 2.0 and above? If so, revert to 1.0 or stop using it for a while to see if your game stabilizes.

Should also mention here, a bit late I guess, to make absolutely certain that your frame rates are capped to the refresh rate of your monitor and that whatever method you used to do so, it's still showing as capped by using the "fps on" in-game cheat code (or something equivalent from your GPU). The newer, stronger GPUs will run wild on this game if capping is not set up, vertical sync becomes undone for some reason, etc.