The Sims 2 Can T Place Floor

Place the elevator on the first floor where ever you want it.
The sims 2 can t place floor. So i can t add a roof to. From that room sims can enter the bathroom and two more rooms. I get a message that says stairs can t intersect with walls. Ok so in my sims 3 game im building the second floor and while i putting the tile down and stuff there gaps were i cant like put tile on and threw the hole you can see the 1st floor.
If seasons is installed the rooms on either end of the second floor will be open to the weather unless the roof gables are replaced with actual walls. It edits the first floor not the second. Okay so i have an issue that s driving me bananapants. I don t know what i m doing wrong.
Every wall connects properly but when i hit the up arrow to go to the second level only part of my house has a ceiling. How do i get rid of this and why is it. The entrance to this home opens onto a room which is possibly meant as a small living room and dining room that leads to a kitchen. Go up to your second floor over the same spot the elevator is below put flooring on the floor and then place your second elevator exactly over the one below.
For some unknown reason when i built walls a few. The sims 3 missing tiles on second floor. I ll try to place a floor tile and it ll basically just ignore it s existence. I am trying to recreate part of a build on a different lot and the stairs will not under any circumstances place against back walls.