I changed the texture of the things I could, but since the func_ladders (and I have 4 of them) had to be AAATRIGGER, it still gave me the error message. This time I noted it told the the lightmap was 69x5 or something. Would it help if I made the func_ladders thinner, because right now they are wider than a normal ladder.
Also if I didn't mention before, my map is one big room, which may be somewhat bad. Last time I compiled I was stuck on buildfacelights, so I got rid of all the lights, got rid of the room, made a correct skybox (which I like to call a skycap) and put in a light_spot with issky set to on.