Forum:Crazy Basement Glitch

This is a really stupid glitch:

1.Create a basement. 2.Detonate and burn basement to make a "puddle". 3.Delete basement. 4.Now there is a wall-less block of dirty floor. 5.Teleport a sim to go clean so i can delete. 6.Sim gets stuck. 7.Teleport back out.

How to fix? (The basement, not the sim)