dredknight
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Hi MrAudi!
1. In the map editor, it is impossible to add objects, heroes, artifacts, treasures, etc. - there is absolutely nothing.
This is a privilege issue. Run the Map Editor as administrator.
2. In a newly created map, all neutral monsters are level 7 (rarely level 6), which makes it difficult to even gain access to the most essential mines. I am playing on the most difficult level, but in the original game, this was interesting, but here it is really impossible. It is impossible to encounter neutrals of levels 1-5 (only if they are weekly).
You are using the wrong executable to generate the map. You need to use either the map editor or MMH55_Utility_64.exe. I would suggest checking this guide.