The crash can be reproduced if you start the game, open random trainer menu, and enable "Black/White Random Select", then "Track Current Random", and then "Trainer Enabled". It occurs in method getLaneOrder() in file RandomTrainer.java at line 41, because laneOrder is null, so you get NullPointerException.
The crash can be reproduced if you start the game, open random trainer menu, and enable "Black/White Random Select", then "Track Current Random", and then "Trainer Enabled". It occurs in method getLaneOrder() in file RandomTrainer.java at line 41, because laneOrder is null, so you get NullPointerException.