I have used the search function and i think the Problem is the tileset, i made an tileset by my own for this map, i did some tilesets from other Maps together to 1 big tileset.
Now i opened the Map with "textdokumet" (sorry i dont know the english word) and changed the tilesetname to an other tileset, but it didnt worked.
I really need to get this Map back i worked 1 Day at it
"Failed to load Map" Error Message
1 
"Failed to load Map" Error Message
Offline
"(...) It seems CS2D turned "Snowy Protection" into "Tile Protection"."
"(...) It seems you need to add a trigger to your map".