Current questions and answers regarding the map editor.

I have a known issue: after saving a map in the editor, it doesn't load (error - can't load D:\...). But! It weighs 43 kilobytes, not 22 bytes; the map name doesn't contain Russian letters; the file path is also in English; some of the maps I created for testing do open. I don't understand what to do; has anyone encountered this and knows how to fix it?