Just gonna spoiler the whole log here for easier access:
First off it mentions problems loading the .map and .map_cache files. I'm unsure exactly what causes this, but perhaps the other problems are to blame. Further on it says there are problems in the entities and meshes. I don't know why these would do this unless some files are corrupt or something. Where did you download it? Did you get it from a good source with an updated version of it?
Otherwise it just mentions a lot of errors within the maps, but I don't see how they should appear if the exact same files have worked for everyone else. This sounds like faulty files to me. Perhaps someone else knows anything?