Trying to edit a scenario where the player has a raven. It saves fine from the editor, but when loading the scenario it crashes with this error:
Error while running event Raven::on_tick (ID 0) Raven/control.lua:13: attempt to compare number with nil
Edit: After some tinkering around, I managed to avoid the crash on load by putting the Raven inside a chest so it's not an active entity in the world. The player will just have to deploy it themselves.