Okay, I'll try, but it was a while ago and i have a horrible memory.
First off, I had a room with Bunker Storage area, and I added a door - I'm pretty sure it was an auto Prison Cell Door. I didn't know it had to be set to Dynamic at the time, so when I tested it, it didn't work. I made a few attempts at fixing the problem, but none of them worked. So, I decided to try and remove the scripts that the door used, hoping that it would cause the door not to appear. I removed the texture, and the door became blank. After finding that out, I tried to restore all of the scripts. I put back what I thought each one was, but it still didn't work, as I didn't know the name of the texture. After this, I tried a few methods of getting rid of doors - the ones posted here. Now that I think about it, none of those actually worked for me. The one that did work, however, was adding a different ROOM segment, which replaced the wall the door was on, and thus removing the door itself.
Last night I was looking up at the stars and said "Where the hell is my roof?!"