Re: Can't finish building second floor on Sims 4
You probably already know this but.....
What happens when you click on the floor of the 2nd story? Does it outline a room? If not, then the space is not fully enclosed. So, make sure that there are no missing wall sections. If it does, go up a level with the room selected and click on the yellow outline. If it says build a ceiling, then click it and build the ceiling.
If you click on a wall, does it select just that wall? Again, the game is not seeing the space as a room, and you'll need to make sure you've enclosed the room.
And if you are using a half roof for one wall, the back of a half roof is not seen as a wall. You have to draw one along it for the space upstairs to be seen as a room.
And for screenshots: Screenshots taken by the game camera are usually too big to load here. Usually, if you hold the Windows button and hit the Print Screen button, the pics generated that way will be small enough. Or if you just want to upload a snippet, then its hold the Windows button, Shift - S. If you still can't get one that is small enough, then you'll have to take the pic to your photo editor and resave it in another format. I save mine as a JPG when I need to upload a pic here.
Hope this helps.