I am having trouble. I decided to create a new creature. Basically, it will be a small turret that shoots out fireballs. It will be made of iron. I took the tissue from the bronze colossus and replaced the bronze with iron, and I took the fireball interaction from the fire imp.
[CREATURE:FIRE_MECHA]
[DESCRIPTION: A small iron turret with a barrel attached for shooting fire at unsupecting visitors.]
[NAME:fire mecha:fire mechas:fire mecha]
[CREATURE_TILE:147][COLOR:6:0:1]
[NOT_LIVING]
[NOPAIN]
[NOT_BUTCHERABLE]
[NOBONES]
[IMMOBILE]
[NO_EAT]
[NO_DRINK]
[NO_SLEEP]
[FIREIMMUNE]
[NO_GENDER]
[NOBREATHE]
[NONAUSEA]
[ITEMCORPSE:BAR:IRON]
[NOTHOUGHT]
[PREFSTRING:iron hull and destruction]
[ALL_ACTIVE]
[LIKES_FIGHTING]
[EXTRAVISION]
[CLUSTER_NUMBER:1:1]
[BIOME:ANY_LAND]
[CAN_DO_INTERACTION:MATERIAL_EMISSION]
[CDI:ADV_NAME:Shoot fireball]
[CDI:USAGE_HINT:ATTACK]
[CDI:FLOW:FIREBALL]
[CDI:BP_REQUIRED:BY_CATEGORY:HAND]
[CDI:TARGET:C:LINE_OF_SIGHT]
[CDI:TARGET_RANGE:C:15]
[CDI:MAX_TARGET_NUMBER:C:1]
[CDI:WAIT_PERIOD:15]
[BODY:HEAD:1:ARM:1:HAND:1]
[TISSUE:IRON]
[TISSUE_NAME:iron:iron]
[TISSUE_MATERIAL:INORGANIC:IRON]
[FUNCTIONAL]
[MUSCULAR]
[STRUCTURAL]
[RELATIVE_THICKNESS:1]
[CONNECTS]
[TISSUE_SHAPE:LAYER]
[TISSUE_LAYER:BY_CATEGORY:ALL:IRON]
[HEATDAM_POINT:NONE]
[BODYGLOSS:HEAD:head:base:heads:bases]
[BODYGLOSS:ARM:arm:barrel:arm:barrels]
[BODYGLOSS:HAND:hand:mechanism:hands:mechanisms]
But, when I load it in arena mode, the game crashes. Help?