Hi Guys, please help me I can't save my map in map editor at all!

Whenever I save it, the file is created, but it's only 22 bytes, so doesn't work for a map.

I've already tried the least: opened an existing map, changed nothing, saved as a new one. But it's still 22 bytes.

My game is not running while I'm using the map editor.

I've not had this problem and I create several maps. I'm using the HOF editor, however. In any case, try following the tutorial carefully, first page to last. It does work, except for the scripting bit, which has a few problems. To learn scripting, follow pitsu's scripting guide.