Crash while scrolling through Creature menu

Was scrolling through the menu of my Nether Creature, which has 5 traits + Nether Aura, and the game crashed and gave me this error code. It appears it has something to do with how the menu goes past the box.

Or, it could be that clicking on backup strategy and then trying to back out will no longer let me press left or right to scroll through my creatures. Trying to back out in this state also caused a crash.