Current questions and answers regarding the map editor.

Hello. I recently started using the map editor for Heroes 5: Tribes of the East. The problem is as follows: the map is already created, and as the red player, I start the game in a Dungeon (I set it so that there is no city at the beginning, and it needs to be captured within a week), but the ground in the Dungeon is completely black (there are no other problems with the textures), and in addition, the hero cannot enter almost half of the locations on the map, as if there were some objects there (for example, mountains). At the top, I made sure that there are no such problems, and the hero can move normally. What do you think the problem might be, and how can I solve it?