Background bug

Normally, I have a black background on Doombuilder 2 but now I found a blank white background. I reloaded the textures and now I have this.
A startan floor with All letters, numbers and symbols on it. Has anyone else seen it?

PS: I do not want to take a pic of it because it is just a startan floor with All letters, numbers and symbols on it.

Today I saw a flying pink elephant.

PS: I didn't take a picture because it was just a flying pink elephant.

Normally, I have a black background on Doombuilder 2 but now I found a blank white background

Tools->Preferences->Apperance-> look under Display, should be the first one.

A startan floor with All letters, numbers and symbols on it.

No idea, all i get is question marks. (if that is the problem, you might not have your configuration correct, make sure the path to the IWads is correct)

Today I saw a flying pink elephant.

PS: I didn't take a picture because it was just a flying pink elephant.

are you OK?

I think that's Boris' roundabout way of suggesting that a screenshot might be useful.