Please use this thread going forward: Save Game Corruption (Disappearing Lots/Error 800 or 801) | EA Forums - 5037272
I have the same bug since for rent. I have mods. It happen only on some neiborhoods. I hope it will solve itself, I want to keep this save. I tried everything and can't figure out if a mod is responsible or if it's the rentals.
I have the same issue since the new 'For rent' pack. This only happens when i try to build a residential rental lot with more than 9 units. Whenever i do this i get loads of orange and green error exclamation marks above random lots in random worlds (see picture). When i scale the residential rental lot back to 9 units in the lot these errors on random lots/worlds go away? This must be a bug as i've removed all my mods and the issue is still there.
@FoxnMoonIt's not mod related i've gone through all my mods (i.e removing them) and i have over 100 of them. Try reducing the number of units to 8 or less per residential rental and see if that fixes the issue.
Edit: im not sure my suggestion of 8 or less units is true anymore. Because i tried to do another residential rental with 7 units in 1 lot and got the same issues.
This same error is happening to my daughter's game, every time she builds a rental lot the game corrupts other lots from other worlds, it doesn't matter what size the rental lot is, it always corrupts something. This is very unfair because I bought the game for my daughter and she has not been able to enjoy the new expansion pack at all.
It looks like it is happening in similar worlds as i have the same issue with the worlds in your screenshots
