Yea.. You might be missing some files, or such.
If your map compiled without any problems - you should try typing '
developer 3' in the console, before loading your map.
Developer 3 mode should show the loading process with
all the details. (It's also extremely useful, when testing complex sequences in your map, because it shows, the entities, that are triggered, etc.)
See, if you'll find your problem with it.