I've been using a lot of houses from the catalog, just because I suck at house making...And I've noticed that when I put a house in from my library, some of the floor tiles don't work, even with nothing on them. All they do is make what WAS supposed to be on them, not there, and I can't even place another tile of flooring down.
Is there something I need to do to fix this? No matter how I try to put flooring down on those squares, it doesn't work, even if I'm trying to put flooring on ALL the ground, it ends up with holes.
*Note, this is the grass level, not on a foundation in a room. I've only seen it when trying to put, say, a sidewalk down or something similar. Added screenshot to give an example.
Thank you all.