For the gravel problem: are you running it with Doom II? I think the gravel uses Doom-II-only textures.
I'm not sure about the key doors. In the latest alpha they use a clever Translation technique that basically recolors the texture in-game rather than having a uniquely-colored texture for each of the doors, although I don't know how that could mess up for you. Post exactly what you're doing, please. (What version of ZDoom/Blocks II, what renderer, where this happens, etc.)
:)
Jimmy91ST
James joined
I'm 17, from England and I play a lot of Doom and make mods for it using the ZDoom and Skulltag engines. I also compose MIDI music (see my site) for other Doom projects. My current big project-in-progress is Blocks of Doom II for ZDoom.