I think the map was Killermon's map BB Prospect, but had purple floor textures for most of it. One of the new DR items appears as an error for me at least;
No prospekt has always been like that - simply cause the textures were never packed in - to be honest, I'll probably get it taken out of rotation. And I think that item missing was Bominomicon, which should be in the content pack - may take some time for it to get around the CDN.