can easily break your game.
bullstuff.
I can't find the exact quote, but I remember a while ago (and I mean A WHILE ago), someone posted in this section asking why their custom brick textures weren't working as well as a few other problems. Badspot said something to the extent of "You shouldn't even be trying to change your brick textures. You especially should not be setting them to read-only or your game will completely forget up."