How can I fix this!?

[Gplayer]

Hey, Newbie comin' through.. lol. I was just using the zelda quest to learn how to build a game and, following a tutorial, I made a cave with a guy who gave a sword. At first when I exited I would do it just fine, but now when i try to exit I just end back inside the cave. Any idea what I did? I worked fine at first but then I started playing with those tiles you get when you push page down... I put them back in the corner but I still can't get out of the cave! Help? Note* Both of my other two caves work just fine.

[Freedom]

Those "tiles" are called combos, and if you right click on them, it will tell you their function.
I believe you probably put a stairs tile inside your cave at the door and instead of sidewarping it is now tilewarping sending you right back where you are since that is a tile warps default destination.