I keep getting this error when I first start a map which I haven't changed. Am I missing something? I was watching some tutorial but there it works without problems.

Your map file is as zm_tutorial? Because, if not, you will have errors with the map, the format to name the map is zm_yourmapname. You're a native english speaker? If you're not a native english speaker, before compilling your map, in the mod tools launcher always go to edit>options and thick your language, and, then, compile your map.
Hope it helps