tiledefs problem

[Gothika]

I've been trying to do some work but my tiledefs have gone all weird. It used to work fine but today I've been getting this problem. What happens is a black line apears diagonally through the screen whenever I load the tiledefs.

This is the script I'm using if that helps.

PHP Code:

//#CLIENTSIDE
    if (created) {
    removetiledefs;
    addtiledef picso2.png,,0;
    }