I just made a map that took me 3 days to make (I think its the best map i have ever made). So i try starting the map up in a custom game, with the game type to regular infection and it says... "This map variant is not compatible with this game variant." The map I made is named Twinfliction.
..... <--- Seriously angry at noob questions face. There's a stickied thread telling you that your map must have ONE safe haven in it! Please use the search bar next time!