Characters phasing through floor.

Help, when I'm making a map, first few playthroughs, the character walks fine, but later, they fall through the floor! Help me.

 

Double check what tile types you're using on that part of the map, and double check in the tileset editor that it's a solid tile. Not sure what editor you're using, but ages ago there was a glitch like this with Booster's Lab, but it was fixed quite a few releases ago. Not sure why you'd be using that old version, though.

Next time, please post modding questions like this in the Quick Modding/Hacking Answers Thread, rather than starting a new thread altogether.

 

Thanks!