The level may not be in the package when you launched it.
Did you tried to add the map you want to load on packaging at Project Settings?
Hello, so i have a “Main Menu” with a “Play” button. When i press the “Play” button inside my engine, it works perfectly fine. But if i press “Launch” and try to press the button there, nothing happens. What can i do?
P.S.: The button opens a level.