Today found the error if you call a controller custom event from the gamemode class in the gamemode begin play then the custom event of the controller its executed before of the Begin Play of himself!!!! This is a massive problem and give errors as the BeginPlay have to setup the controller!

Note: To me this only happen in the packaged versions of the game, and not in the editor!!!

In editor calls -> GameMode -> Begin Play -> The Controller Begin Play -> The Custom Event of the Controller
In Game -> GameMode -> Begin Play -> The Custom Event of the Controller -> The Controller Begin Play

If you have an Event Post Login in the Gamemode its called aswell before of the Begin Play of the same GameMode

OnPostLogin can't manage to set View in the controller cause the Camera Manager its executed later... so