Cool! This crash occurs when the shapes position is being assigned to a bots refvars. I neglected to add a check for shape positions > 32000 and didn't test shape visability on larger fields.
Nice find. Fixed in 2.42.9h.
At some point, we need to decide what we want to do when .xpos, .ypos, .refxpos, .refypos and so on exceed 32000.... It's not as simple as it sounds becuase it impacts things like angle...