When you used to make a level with models, and someone didn't want the models, they could still play the level but with pillars instead of the models, right?
Now with the textures, if a level contains custom textures and you don't download them the level won't play at all and the game crashes (at least on my machine). I don't know if this is meant to happen or a bug, but just so you all know if you don't download the textures it's a waste of time downloading the level. Unless of course you put it in the editor and take out the custom textures, but that seems like hard work to me and it's easier to download the textures.
I'm only bringing this up cos I've noticed that more people are downloading the little test levels than are downloading the textures.
Superterv, Founder of the *K9 Carers*, 