Q: When i start the DodoIsland Map it loads but befor it is ready my Ark get closed without an error message.

A: There is a Problem with the savegame of DodoIsland or you Singleplayer character.
Go to \Steam\SteamApps\common\ARK\ShooterGame\Saved\SavedArksLocal and delete all DodoIsland files and the LocalPlayer file
NOTICE: If you delete your LocalPlayer file will delete your character in Singleplayer !

Q: When i start the DodoIsland Map it loads but crashes befor ready.

A: Some map files can get corrupted. please delete the Mod in your mods folder and resupscribe.
Delete the folder \Steam\SteamApps\common\ARK\ShooterGame\Content\Mods\499387243
and the 499387243.mod file