Failed to load a custom map with the ARK Devkit

I created a custom map with the Ark Devkit v278.0 and saved it.Than I tried to open the map but it Shows me following:

Failed to open map file. This is most likely because the map was saved with a newer version of the engine.

I can’t open the map,it only opens a empty level.This propblem appeares everytime after I used the “play from here” option on the map and than saving it.