Discussion about mapmaking in Heroes V.

Guys, please help me with the editor. I have a problem: I created a pretty good map, and it loads without errors, but there's one glitch. Basically, when I send a hero out of the castle in the game, it kicks me out; the map doesn't allow heroes to be on the ground.

You've clearly made the most progress on our forum in this area. Few others have created a map yet. And what size map are you making? Also, I want to ask something else. I placed a random castle and created a path leading to it. How can I be sure that the path leads out of the castle gate and not from the wall?