While it's generating the history, usually less then ten years in, sometimes before it even starts generating the history, although it made it up to 30 years once on a small world.
EDIT: Oh, and it made it through twice, once when I commented out megabeasts (didn't try more then one with that, gonna try it some more to make sure), and once seemingly completely at random.
EDIT2: Yeah, it definitely seems to be the megabeasts. I'll go ahead and post my megabeast raws and people can point out if anything seems particularly out of whack.
[CREATURE:BENKEI]
[DESCRIPTION:A sturdy human hero come to prove his might to the tengu.]
[NAME:benkei:benkeis:benkei]
[CASTE_NAME:benkei:benkeis:benkei]
[CREATURE_TILE:64][COLOR:7:0:0]
[CREATURE_SOLDIER_TILE:64]
[INTELLIGENT]
[CANOPENDOORS]
[LIKES_FIGHTING]
[MEGABEAST][DIFFICULTY:5]
[ATTACK_TRIGGER:50:7000:80000]
[NOPAIN]
[NOEXERT]
[NOFEAR]
[NOSTUN]
[PREFSTRING:inhuman resiliance]
[BODY:HUMANOID:2EYES:2EARS:NOSE:2LUNGS:HEART:GUTS:ORGANS:HUMANOID_JOINTS:THROAT:NECK:SPINE:BRAIN:SKULL:5FINGERS:5TOES:MOUTH:TONGUE:FACIAL_FEATURES:TEETH:RIBCAGE]
[BODY_DETAIL_PLAN:STANDARD_MATERIALS]
[BODY_DETAIL_PLAN:STANDARD_TISSUES]
[TISSUE:STEEL]
[TISSUE_NAME:unbreakable hide:unbreakable hide]
[TISSUE_MATERIAL:INORGANIC:STEEL]
[MUSCULAR]
[FUNCTIONAL]
[STRUCTURAL]
[RELATIVE_THICKNESS:1]
[CONNECTS]
[TISSUE_SHAPE:LAYER]
[TISSUE_LAYER:SKIN:STEEL]
[BODY_DETAIL_PLAN:VERTEBRATE_TISSUE_LAYERS:SKIN:FAT:MUSCLE:BONE:CARTILAGE]
[BODY_DETAIL_PLAN:HEAD_HAIR_TISSUE_LAYERS]
[USE_TISSUE_TEMPLATE:EYEBROW:EYEBROW_TEMPLATE]
[TISSUE_LAYER:BY_CATEGORY:HEAD:EYEBROW:ABOVE:BY_CATEGORY:EYE]
[USE_TISSUE_TEMPLATE:EYELASH:EYELASH_TEMPLATE]
[TISSUE_LAYER:BY_CATEGORY:EYELID:EYELASH:FRONT]
[USE_MATERIAL_TEMPLATE:NAIL:NAIL_TEMPLATE]
[USE_TISSUE_TEMPLATE:NAIL:NAIL_TEMPLATE]
[TISSUE_LAYER:BY_CATEGORY:FINGER:NAIL:FRONT]
[TISSUE_LAYER:BY_CATEGORY:TOE:NAIL:FRONT]
[SELECT_TISSUE_LAYER:HEART:BY_CATEGORY:HEART]
[PLUS_TISSUE_LAYER:SKIN:BY_CATEGORY:THROAT]
[TL_MAJOR_ARTERIES]
[BODY_DETAIL_PLAN:FACIAL_HAIR_TISSUES]
[BODY_DETAIL_PLAN:STANDARD_HEAD_POSITIONS]
[BODY_DETAIL_PLAN:HUMANOID_HEAD_POSITIONS]
[BODY_DETAIL_PLAN:HUMANOID_RIBCAGE_POSITIONS]
[BODY_DETAIL_PLAN:HUMANOID_RELSIZES]
[USE_MATERIAL_TEMPLATE:SINEW:SINEW_TEMPLATE]
[TENDONS:LOCAL_CREATURE_MAT:SINEW:200]
[LIGAMENTS:LOCAL_CREATURE_MAT:SINEW:200]
[HAS_NERVES]
[USE_MATERIAL_TEMPLATE:BLOOD:BLOOD_TEMPLATE]
[BLOOD:LOCAL_CREATURE_MAT:BLOOD:LIQUID]
[CREATURE_CLASS:GENERAL_POISON]
[GETS_WOUND_INFECTIONS]
[GETS_INFECTIONS_FROM_ROT]
[USE_MATERIAL_TEMPLATE:PUS:PUS_TEMPLATE]
[PUS:LOCAL_CREATURE_MAT:PUS:LIQUID]
[BIOME:ANY_LAND]
[BODY_SIZE:0:0:4000]
[BODY_SIZE:1:168:17500]
[BODY_SIZE:12:0:100000]
[BODY_APPEARANCE_MODIFIER:HEIGHT:120:120:120:120:120:120:120]
[BODY_APPEARANCE_MODIFIER:BROADNESS:120:120:120:120:120:120:120]
[PHYS_ATT_RANGE:ENDURANCE:5000:5000:5000:5000:5000:5000:5000]
[SET_BP_GROUP:BY_CATEGORY:EYE]
[BP_APPEARANCE_MODIFIER:CLOSE_SET:100:100:100:100:100:100:100]
[APP_MOD_NOUN:eyes:PLURAL]
[BP_APPEARANCE_MODIFIER:DEEP_SET:100:100:100:100:100:100:100]
[APP_MOD_NOUN:eyes:PLURAL]
[BP_APPEARANCE_MODIFIER:ROUND_VS_NARROW:200:200:200:200:200:200:200]
[APP_MOD_NOUN:eyes:PLURAL]
[BP_APPEARANCE_MODIFIER:LARGE_IRIS:100:100:100:100:100:100:100]
[APP_MOD_NOUN:eyes:PLURAL]
[APP_MOD_DESC_RANGE:100:100:100:100:100:100]
[SET_BP_GROUP:BY_CATEGORY:LIP]
[BP_APPEARANCE_MODIFIER:THICKNESS:100:100:100:100:100:100:100]
[APP_MOD_NOUN:lips:PLURAL]
[APP_MOD_DESC_RANGE:100:100:100:100:100:100]
[SET_BP_GROUP:BY_CATEGORY:NOSE]
[BP_APPEARANCE_MODIFIER:BROADNESS:100:100:100:100:100:100:100]
[APP_MOD_DESC_RANGE:100:100:100:100:100:100]
[BP_APPEARANCE_MODIFIER:LENGTH:100:100:100:100:100:100:100]
[APP_MOD_DESC_RANGE:100:100:100:100:100:100]
[BP_APPEARANCE_MODIFIER:UPTURNED:50:50:50:50:50:50]
[BP_APPEARANCE_MODIFIER:CONVEX:100:100:100:100:100:100:100]
[APP_MOD_NOUN:nose bridge:SINGULAR]
[SET_BP_GROUP:BY_CATEGORY:EAR]
[BP_APPEARANCE_MODIFIER:SPLAYED_OUT:100:100:100:100:100:100:100]
[APP_MOD_NOUN:ears:PLURAL]
[BP_APPEARANCE_MODIFIER:HANGING_LOBES:100:100:100:100:100:100:100]
[APP_MOD_NOUN:ears:PLURAL]
[BP_APPEARANCE_MODIFIER:BROADNESS:100:100:100:100:100:100:100]
[APP_MOD_NOUN:ears:PLURAL]
[APP_MOD_DESC_RANGE:100:100:100:100:100:100]
[BP_APPEARANCE_MODIFIER:HEIGHT:100:100:100:100:100:100:100]
[APP_MOD_NOUN:ears:PLURAL]
[APP_MOD_DESC_RANGE:100:100:100:100:100:100]
[SET_BP_GROUP:BY_CATEGORY:TOOTH]
[BP_APPEARANCE_MODIFIER:GAPS:100:100:100:100:100:100:100]
[APP_MOD_NOUN:teeth:PLURAL]
[SET_BP_GROUP:BY_CATEGORY:SKULL]
[BP_APPEARANCE_MODIFIER:HIGH_CHEEKBONES:130:130:130:130:130:130:130]
[BP_APPEARANCE_MODIFIER:BROAD_CHIN:70:70:70:70:70:70:70]
[BP_APPEARANCE_MODIFIER:JUTTING_CHIN:100:100:100:100:100:100:100]
[BP_APPEARANCE_MODIFIER:SQUARE_CHIN:100:100:100:100:100:100:100]
[SET_BP_GROUP:BY_CATEGORY:THROAT]
[BP_APPEARANCE_MODIFIER:DEEP_VOICE:200:200:200:200:200:200:200]
[BP_APPEARANCE_MODIFIER:RASPY_VOICE:0:0:0:0:0:0:0]
[SET_BP_GROUP:BY_CATEGORY:HEAD]
[BP_APPEARANCE_MODIFIER:BROADNESS:90:95:98:100:102:105:110]
[BP_APPEARANCE_MODIFIER:HEIGHT:90:95:98:100:102:105:110]
[APP_MOD_IMPORTANCE:700]
[APP_MOD_DESC_RANGE:91:94:98:102:106:109]
[MAXAGE:60:120]
[ATTACK:PUNCH:BODYPART:BY_TYPE:GRASP]
[ATTACK_SKILL:GRASP_STRIKE]
[ATTACK_VERB:punch:punches]
[ATTACK_CONTACT_PERC:200]
[ATTACK_FLAG_WITH]
[ATTACK_PRIORITY:MAIN]
[ATTACK:KICK:BODYPART:BY_TYPE:STANCE]
[ATTACK_SKILL:STANCE_STRIKE]
[ATTACK_VERB:kick:kicks]
[ATTACK_CONTACT_PERC:200]
[ATTACK_FLAG_WITH]
[ATTACK_PRIORITY:SECOND]
[ATTACK:SCRATCH:CHILD_TISSUE_LAYER_GROUP:BY_TYPE:GRASP:BY_CATEGORY:FINGER:NAIL]
[ATTACK_SKILL:GRASP_STRIKE]
[ATTACK_VERB:scratch:scratches]
[ATTACK_CONTACT_PERC:200]
[ATTACK_PENETRATION_PERC:200]
[ATTACK_FLAG_EDGE]
[ATTACK_PRIORITY:SECOND]
[ATTACK:BITE:CHILD_BODYPART_GROUP:BY_CATEGORY:HEAD:BY_CATEGORY:TOOTH]
[ATTACK_SKILL:BITE]
[ATTACK_VERB:bite:bites]
[ATTACK_CONTACT_PERC:200]
[ATTACK_PENETRATION_PERC:200]
[ATTACK_FLAG_EDGE]
[ATTACK_PRIORITY:SECOND]
[ATTACK_FLAG_CANLATCH]
[BABY:1]
[CHILD:12]
[EQUIPS]
[DIURNAL]
[HOMEOTHERM:10067]
[SWIMS_LEARNED][SWIM_SPEED:2500]
[MUNDANE]
[CASTE:MALE]
[MALE]
[BODY_DETAIL_PLAN:FACIAL_HAIR_TISSUE_LAYERS]
[SELECT_CASTE:ALL]
[SET_TL_GROUP:BY_CATEGORY:HEAD:HAIR]
[PLUS_TL_GROUP:BY_CATEGORY:HEAD:CHEEK_WHISKERS]
[PLUS_TL_GROUP:BY_CATEGORY:HEAD:CHIN_WHISKERS]
[PLUS_TL_GROUP:BY_CATEGORY:HEAD:MOUSTACHE]
[PLUS_TL_GROUP:BY_CATEGORY:HEAD:SIDEBURNS]
[PLUS_TL_GROUP:BY_CATEGORY:HEAD:EYEBROW]
[PLUS_TL_GROUP:BY_CATEGORY:HEAD:EYELASH]
[TL_COLOR_MODIFIER:BLACK:1]
[TLCM_NOUN:hair:SINGULAR]
[SET_TL_GROUP:BY_CATEGORY:HEAD:EYEBROW]
[TISSUE_LAYER_APPEARANCE_MODIFIER:LENGTH:100:100:100:100:100:100:100]
[APP_MOD_NOUN:eyebrows:PLURAL]
[TISSUE_LAYER_APPEARANCE_MODIFIER:DENSE:100:100:100:100:100:100:100]
[APP_MOD_NOUN:eyebrows:PLURAL]
[TISSUE_LAYER_APPEARANCE_MODIFIER:HIGH_POSITION:100:100:100:100:100:100:100]
[APP_MOD_NOUN:eyebrows:PLURAL]
[SET_TL_GROUP:BY_CATEGORY:HEAD:EYELASH]
[TISSUE_LAYER_APPEARANCE_MODIFIER:LENGTH:100:100:100:100:100:100:100]
[APP_MOD_NOUN:eyelashes:PLURAL]
[SET_TL_GROUP:BY_CATEGORY:HEAD:HAIR]
[PLUS_TL_GROUP:BY_CATEGORY:HEAD:CHEEK_WHISKERS]
[PLUS_TL_GROUP:BY_CATEGORY:HEAD:CHIN_WHISKERS]
[PLUS_TL_GROUP:BY_CATEGORY:HEAD:MOUSTACHE]
[PLUS_TL_GROUP:BY_CATEGORY:HEAD:SIDEBURNS]
[TL_COLOR_MODIFIER:BLACK:1]
[SET_TL_GROUP:BY_CATEGORY:HEAD:HAIR]
[TISSUE_STYLE_UNIT:HAIR:STANDARD_HAIR_SHAPINGS]
[TSU_NOUN:hair:SINGULAR]
[SET_TL_GROUP:BY_CATEGORY:HEAD:CHEEK_WHISKERS]
[PLUS_TL_GROUP:BY_CATEGORY:HEAD:CHIN_WHISKERS]
[TISSUE_STYLE_UNIT:BEARD:STANDARD_BEARD_SHAPINGS]
[TSU_NOUN:beard:SINGULAR]
[SET_TL_GROUP:BY_CATEGORY:HEAD:MOUSTACHE]
[TISSUE_STYLE_UNIT:MOUSTACHE:STANDARD_MOUSTACHE_SHAPINGS]
[TSU_NOUN:moustache:SINGULAR]
[SET_TL_GROUP:BY_CATEGORY:HEAD:SIDEBURNS]
[TISSUE_STYLE_UNIT:SIDEBURNS:STANDARD_SIDEBURNS_SHAPINGS]
[TSU_NOUN:sideburns:PLURAL]
[SET_TL_GROUP:BY_CATEGORY:ALL:SKIN]
[TL_COLOR_MODIFIER:TAN:1]
[TLCM_NOUN:skin:SINGULAR]
[TISSUE_LAYER_APPEARANCE_MODIFIER:WRINKLY:0:0:0:0:0:0:0]
[APP_MOD_NOUN:skin:SINGULAR]
[SET_TL_GROUP:BY_CATEGORY:EYE:EYE]
[TL_COLOR_MODIFIER:IRIS_EYE_BLACK:1]
[TLCM_NOUN:eyes:PLURAL]
[CREATURE:MISHAGUJI]
[DESCRIPTION:An old native god, taking the form of an enormous marble snake, associated with the harvest and curses.]
[NAME:mishaguji:mishaguji:mishaguji]
[CASTE_NAME:mishaguji:mishaguji:mishaguji]
[CREATURE_TILE:'s'][COLOR:6:0:0]
[CARNIVORE]
[LARGE_ROAMING][LIKES_FIGHTING]
[INTELLIGENT][NOEXERT][NOPAIN][NOFEAR]
[BIOME:ANY_LAND]
[ATTACK_TRIGGER:80:1000:100000]
[POPULATION_NUMBER:5:10]
[PREFSTRING:duality]
[BODY:BASIC_1PARTBODY:BASIC_HEAD:TAIL:2EYES:NOSE:2LUNGS:HEART:GUTS:ORGANS:THROAT:NECK:SPINE:BRAIN:SKULL:MOUTH:GENERIC_TEETH_WITH_FANGS:RIBCAGE]
[BODY_DETAIL_PLAN:STANDARD_MATERIALS]
[REMOVE_MATERIAL:SKIN]
[REMOVE_MATERIAL:LEATHER]
[REMOVE_MATERIAL:HAIR]
[USE_MATERIAL_TEMPLATE:SCALE:SCALE_TEMPLATE]
[TISSUE:MARBLE]
[TISSUE_NAME:marble hide:marble hide]
[TISSUE_MATERIAL:INORGANIC:MARBLE]
[MUSCULAR]
[FUNCTIONAL]
[STRUCTURAL]
[RELATIVE_THICKNESS:1]
[CONNECTS]
[TISSUE_SHAPE:LAYER]
[TISSUE_LAYER:BY_CATEGORY:ALL]
[BODY_DETAIL_PLAN:STANDARD_TISSUES]
[REMOVE_TISSUE:SKIN]
[REMOVE_TISSUE:HAIR]
[USE_TISSUE_TEMPLATE:SCALE:SCALE_TEMPLATE]
[BODY_DETAIL_PLAN:VERTEBRATE_TISSUE_LAYERS:SCALE:FAT:MUSCLE:BONE:CARTILAGE]
[BODY_DETAIL_PLAN:LEATHERY_EGG_MATERIALS]
[SELECT_TISSUE_LAYER:HEART:BY_CATEGORY:HEART]
[PLUS_TISSUE_LAYER:SCALE:BY_CATEGORY:THROAT]
[TL_MAJOR_ARTERIES]
[BODY_DETAIL_PLAN:STANDARD_HEAD_POSITIONS]
[BODY_DETAIL_PLAN:HUMANOID_RIBCAGE_POSITIONS]
[USE_MATERIAL_TEMPLATE:SINEW:SINEW_TEMPLATE]
[TENDONS:LOCAL_CREATURE_MAT:SINEW:200]
[LIGAMENTS:LOCAL_CREATURE_MAT:SINEW:200]
[HAS_NERVES]
[USE_MATERIAL_TEMPLATE:BLOOD:BLOOD_TEMPLATE]
[BLOOD:LOCAL_CREATURE_MAT:BLOOD:LIQUID]
[CREATURE_CLASS:HOLY]
[USE_MATERIAL_TEMPLATE:PUS:PUS_TEMPLATE]
[PUS:LOCAL_CREATURE_MAT:PUS:LIQUID]
[USE_MATERIAL_TEMPLATE:VENOM:CREATURE_EXTRACT_TEMPLATE]
[STATE_NAME:ALL_SOLID:frozen mishaguji venom]
[STATE_ADJ:ALL_SOLID:frozen mishaguji venom]
[STATE_NAME:LIQUID:mishaguji venom]
[STATE_ADJ:LIQUID:mishaguji venom]
[STATE_NAME:GAS:boiling mishaguji venom]
[STATE_ADJ:GAS:boiling mishaguji venom]
[PREFIX:NONE]
[ENTERS_BLOOD]
[SYNDROME]
[SYN_NAME:mishaguji bite]
[SYN_AFFECTED_CLASS:GENERAL_POISON]
[SYN_IMMUNE_CREATURE:COPPERHEAD_SNAKE:ALL]
[SYN_INJECTED]
[CE_NECROSIS:SEV:1000:PROB:100:RESISTABLE:SIZE_DILUTES:LOCALIZED:VASCULAR_ONLY:START:50:PEAK:500:END:1500]
[CE_SWELLING:SEV:1000:PROB:100:RESISTABLE:SIZE_DILUTES:LOCALIZED:VASCULAR_ONLY:START:50:PEAK:500:END:1500]
[CE_PAIN:SEV:1000:PROB:100:RESISTABLE:SIZE_DILUTES:START:50:PEAK:500:END:1500]
[BODY_SIZE:0:0:100000]
[BODY_APPEARANCE_MODIFIER:LENGTH:90:95:98:100:102:105:110]
[ATTACK:BITE:CHILD_BODYPART_GROUP:BY_CATEGORY:HEAD:BY_CATEGORY:TOOTH]
[ATTACK_SKILL:BITE]
[ATTACK_VERB:bite:bites]
[ATTACK_CONTACT_PERC:100]
[ATTACK_PENETRATION_PERC:100]
[ATTACK_PRIORITY:MAIN]
[ATTACK_FLAG_EDGE]
[ATTACK_FLAG_CANLATCH]
[SPECIALATTACK_INJECT_EXTRACT:LOCAL_CREATURE_MAT:VENOM:LIQUID:100:100]
[SWIMS_INNATE][SWIM_SPEED:1200]
[SELECT_CASTE:ALL]
[SET_TL_GROUP:BY_CATEGORY:ALL:SCALE]
[TL_COLOR_MODIFIER:WHITE:1]
[TLCM_NOUN:scales:PLURAL]
[SET_TL_GROUP:BY_CATEGORY:EYE:EYE]
[TL_COLOR_MODIFIER:RED:1]
[TLCM_NOUN:eyes:PLURAL]
[CAN_DO_INTERACTION:DIVINE_WRATH]
[CDI:ADV_NAME:divine wrath]
[CDI:USAGE_HINT:ATTACK]
[CDI:TARGET:B:DISTURBER_ONLY]
[CDI:TARGET_RANGE:B:10]
[CDI:MAX_TARGET_NUMBER:B:1]
[CDI:WAIT_PERIOD:10000]
[CDI:VERB:curse:curses:NA]
[SELECT_MATERIAL:ALL]
[MULTIPLY_VALUE:10]
[INTERACTION:DIVINE_WRATH]
[I_SOURCE:CREATURE_ACTION]
[I_TARGET:B:CREATURE]
[IT_LOCATION:CONTEXT_CREATURE]
[IT_MANUAL_INPUT:Select a creature.]
[I_EFFECT:ADD_SYNDROME]
[IE_TARGET:B]
[SYNDROME]
[SYN_AFFECTED_CLASS:GENERAL_POISON]
[SYN_AFFECTED_CLASS:NATURE_SPIRIT]
[SYN_AFFECTED_CLASS:EVIL]
[SYN_NAME:divine wrath]
[CE_PHYS_ATT_CHANGE:DISEASE_RESISTANCE:250:750:START:0]
I did try something new with that interaction, so it's entirely possible that I've caused some kind of terrible world gen chain reaction.