The map doesn't load in the editor. Auto-translated

I'm not very good with the editor myself; I just generated a random map for 2 players, removed all mixed armies, and placed random creatures. I also added artifacts so that relics wouldn't be scattered everywhere. I wanted another person to join, so I tried to add another player through the castle, but the player couldn't choose an artifact in the starting bonus, and a random hero wasn't generated. I saw in the map settings on the left (I think this is the settings list) that there's a "players" tab. I clicked "add," and after restarting, the map stopped launching. How can I fix this? I'd appreciate any help. Sorry for creating an extra thread; I saw questions and answers about the editor later.