The error is not necessarily always an bug. Do you just have issues with this one lot ?
Does the lot have any custom (black) pictures ?
Well considering I was getting an Internet connection error while trying to use an offline feature, I'm pretty certain it's a bug. As mentioned, I was not trying to upload to the online Gallery. I was only trying to save the lot to my offline library.
I tried multiple times but kept getting the same error until I restarted my game. I didn't make any changes to my Mods folder or my Wi-Fi network and I didn't repair the game. I just quit and immediately restarted. For whatever reason, that fixed it even though I didn't change anything. I was able to save the lot and even upload it to the Gallery later on with no trouble.
So I guess if anyone else is getting that error when they know for a fact they shouldn't be, try restarting the game.
Could also be related to the current gallery issues in general.
The Sims Team
