We'd be happy to help, but without knowing what exactly is too complicated, or what the error screen says, that's very hard.
The official editor is a very old piece of software, that's kinda difficult to get to work on a modern machine. If it's too complicated for you to get that to work, I mentioned Adikted, at the link you just posted. Try that, it doesn't look pretty, but it's very easy. Also, the document I wrote and linked in my last post should tell you everything you need to know, if anything is still unclear, feel free to ask.
However, there's no getting around that levels in DK are made by
writing script. The map editor - neither adikted nor the official - won't do that for you. That's just there to 'paint' where there's dirt, rock, gold and rooms.