Damn things.... just built to annoy!

I am trying to reduce the chariot crew on the scorpion cart to a single man. Set the thing in descr_mount, and removed the extra crew position.

Then I set the number of men and chariots in export_descr_units to 6 and 6. This fits with the unit minimum and the correct ratio for men to carts.

Loads Ok, and all seems ok. Start a custom battle, and it loads fine and you get the button to click to start the battle...... and......POP .

CTD!

Is it just the annoyingly hard-coded Scorpion Cart, or has something else been overlooked by me?