Current questions and answers regarding the map editor.

I unlocked the editor, the button appeared, but it's useless. The problem hasn't been solved. There's no way to change the hero in the lineup.

Added 34 minutes later
Hmm. Something incredible is happening with my game. Games for Hot Seat mode now launch from single-player mode and run without any problems. This is basically impossible! In 15 years of playing, this has never happened. It seems I need to uninstall the game with the editor and reinstall it. It's been installed for 15 years and never caused any problems. What did I do?