Messed up tiles.

K so everytime I start the editor as of a few hours ago I get this really messed up image and when I go to select a tile I get nothing. I am guessing that it is because I have gone on a few different player made servers? Really annoying. Can somebody help me out, Anybody else had this issue?

make an NPC, put this script in it

removetiledefs;

Run the level. All fixed.

it happens when you fuck up an addtiledef.

fixed!