I found the reason for the error.steinio wrote:Hello,
i tried some stuff but provoked a crash
...
The defines.events.on_player_created event is not called when the earth scenario is started. This event is used for initializing necessary data in Research Queue when a player is created. Because this event is not called, the data is nil and hence the game complains it. (It has nothing to do with Creative Mode. Without it, you will still get into the error when you finish a research.)
But the reason why it is not called is beyond my knowledge. Perhaps you should ask the author of that scenario.