My game crashed during a fight with a spider in Bloodbark forest. My guess is that the game crashed because of the air mage's (mine) projectile hit the spider at the moment it was leaving the screen. The error report is in the attached picture below.

Great game so far! Very enjoyable.

Thanks!

Did you happen to have the Fog spell active at the moment the Spiderling died? If so, (and from the message and lines of code being referenced, it looks like it is) then this is a known bug that will be fixed in an upcoming patch.