Issue description
When setting up a new game, if I set it to "Captain", and then go and try to change the Ore Mining Yield, the game will crash if I linger on the (i), and then try to change it, or if I try to change it twice.
Expected behavior
For it not to crash
Reproduction steps
Explained in Issue Description
Game version
0.4.7D
Attachments
Player-prev.log