Error! help :(

I have no clue what to do. help please

GAL Exception: file : c:\Work\forge\main\code\src\libs\gpggal\Device.cpp(99)
error: invalid head index

Program : C:\Demigod\bin\Demigod.exe
Cmd line arguments :

Callstack:
    unavailable.

Last 100 lines of log...

A full record of the log is stored in the Demigodlog.txt file

debug: Loading module '\000/lua/common/achievements/hqueen_achievementdata.lua\000'
debug: Loading module '\000/lua/common/achievements/hrook_achievementdata.lua\000'
debug: Loading module '\000/lua/common/achievements/hsedna_achievementdata.lua\000'
debug: Loading module '\000/lua/common/achievements/hvampire_achievementdata.lua\000'
debug: Loading module '\000/units/heroes/hema01/hema01_abilities.lua\000'
debug: Loading module '\000/units/heroes/hepa01/hepa01_abilities.lua\000'
debug: Loading module '\000/units/heroes/hgsa01/hgsa01_abilities.lua\000'
debug: Loading module '\000/units/heroes/hgsa01/hgsa01mine01_abilities.lua\000'
debug: Loading module '\000/units/heroes/hoak/hoak_abilities.lua\000'
debug: Loading module '\000/units/heroes/hoculus/hoculus_abilities.lua\000'
debug: Loading module '\000/units/heroes/hqueen/hqueen_abilities.lua\000'
debug: Loading module '\000/units/heroes/hrook/hrook_abilities.lua\000'
debug: Loading module '\000/units/heroes/hsedna/hsedna_abilities.lua\000'
debug: Loading module '\000/units/heroes/hvampire/hvampire_abilities.lua\000'
debug: Loading module '\000/units/minions/highpriest/highpriest01_abilities.lua\000'
debug: Loading module '\000/units/minions/highpriest/highpriest02_abilities.lua\000'
debug: Loading module '\000/units/minions/highpriest/highpriest03_abilities.lua\000'
debug: Loading module '\000/units/minions/highpriest/highpriest04_abilities.lua\000'
debug: Loading module '\000/units/reinforcements/rpriest/rpriest01_abilities.lua\000'
debug: Loading module '\000/units/un/b/unbflagcooldown01/unbflagcooldown01_abilities.lua\000'
debug: Loading module '\000/units/un/b/unbflagdamageamp01/unbflagdamageamp01_abilities.lua\000'
debug: Loading module '\000/units/un/b/unbflagexperience01/unbflagexperience01_abilities.lua\000'
debug: Loading module '\000/units/un/b/unbflaghealthregen01/unbflaghealthregen01_abilities.lua\000'
debug: Loading module '\000/units/un/b/unbflagmanaregen01/unbflagmanaregen01_abilities.lua\000'
debug: Loading module '\000/units/un/b/unbflagmaxhealth01/unbflagmaxhealth01_abilities.lua\000'
debug: Loading module '\000/units/un/b/unbflagmaxmana01/unbflagmaxmana01_abilities.lua\000'
debug: Loading module '\000/units/un/b/unbflagwavesizes01/unbflagwavesizes01_abilities.lua\000'
debug: Loading module '\000/units/un/b/unbflagwavespeed01/unbflagwavespeed01_abilities.lua\000'
debug: Loading module '\000/units/un/b/unbidol01/unbidol01_abilities.lua\000'
debug: Loading module '\000/characters/angel/angel_character.lua\000'
debug: Loading module '\000/characters/archer/archer_character.lua\000'
debug: Loading module '\000/characters/archer/archer_movie_character.lua\000'
debug: Loading module '\000/characters/bird/bird_character.lua\000'
debug: Loading module '\000/characters/ent/ent_character.lua\000'
debug: Loading module '\000/characters/flag/flag_character.lua\000'
debug: Loading module '\000/characters/giant/giant_character.lua\000'
debug: Loading module '\000/characters/giant/giant_r_character.lua\000'
debug: Loading module '\000/characters/highpriest/highpriest02_character.lua\000'
debug: Loading module '\000/characters/highpriest/highpriest03_character.lua\000'
debug: Loading module '\000/characters/highpriest/highpriest04_character.lua\000'
debug: Loading module '\000/characters/highpriest/highpriest_character.lua\000'
debug: Loading module '\000/characters/king/king_character.lua\000'
debug: Loading module '\000/characters/leopard_rider/leopard_rider_character.lua\000'
debug: Loading module '\000/characters/mage/mage_character.lua\000'
debug: Loading module '\000/characters/mage/magefire_character.lua\000'
debug: Loading module '\000/characters/minotaur/minotaur_character.lua\000'
debug: Loading module '\000/characters/minotaur/minotaur_movie1_character.lua\000'
debug: Loading module '\000/characters/minotaur/minotaur_movie2_character.lua\000'
debug: Loading module '\000/characters/minotaurcaptain/minotaurcaptain02_character.lua\000'
debug: Loading module '\000/characters/minotaurcaptain/minotaurcaptain03_character.lua\000'
debug: Loading module '\000/characters/minotaurcaptain/minotaurcaptain04_character.lua\000'
debug: Loading module '\000/characters/minotaurcaptain/minotaurcaptain_character.lua\000'
debug: Loading module '\000/characters/oak/oak_character.lua\000'
debug: Loading module '\000/characters/priest/priest_character.lua\000'
debug: Loading module '\000/characters/priest/priest_movie_character.lua\000'
debug: Loading module '\000/characters/queen/queen_character.lua\000'
debug: Loading module '\000/characters/queen/queen_open_character.lua\000'
debug: Loading module '\000/characters/queen/queen_open_movie_character.lua\000'
debug: Loading module '\000/characters/rook/rook_character.lua\000'
debug: Loading module '\000/characters/serpent/serpent_character.lua\000'
debug: Loading module '\000/characters/siegearcher/siegearcher02_character.lua\000'
debug: Loading module '\000/characters/siegearcher/siegearcher03_character.lua\000'
debug: Loading module '\000/characters/siegearcher/siegearcher04_character.lua\000'
debug: Loading module '\000/characters/siegearcher/siegearcher_character.lua\000'
debug: Loading module '\000/characters/sniper/sniper_character.lua\000'
debug: Loading module '\000/characters/sniper/sniperfury_character.lua\000'
debug: Loading module '\000/characters/spirit/spirit_character.lua\000'
debug: Loading module '\000/characters/trebuchet/hrooktreb_character.lua\000'
debug: Loading module '\000/characters/trebuchet/trebuchet_character.lua\000'
debug: Loading module '\000/characters/unclean_beast/unclean_beast_character.lua\000'
debug: Loading module '\000/characters/unclean_beast/unclean_beast_movie_character.lua\000'
debug: Loading module '\000/characters/vampire/vampire_character.lua\000'
debug: Loading module '\000/characters/vampire_lord/vampire_lord_character.lua\000'
debug: Loading module '\000/characters/waridol/waridol_character.lua\000'
debug: Loading module '\000/characters/whiptail/whiptail_character.lua\000'
debug: Loading module '\000/characters/yeti/yeti_character.lua\000'
debug: Loading module '\000/lua/common/powerupdefinitions.lua\000'
debug: Loading module '\000/lua/common/items/achievement_items.lua\000'
debug: Loading module '\000/lua/common/items/artifact_items.lua\000'
debug: Loading module '\000/lua/common/items/boot_items.lua\000'
debug: Loading module '\000/lua/common/items/chest_items.lua\000'
debug: Loading module '\000/lua/common/items/consumable_items.lua\000'
debug: Loading module '\000/lua/common/items/generals_items.lua\000'
debug: Loading module '\000/lua/common/items/glove_items.lua\000'
debug: Loading module '\000/lua/common/items/helm_items.lua\000'
debug: Loading module '\000/lua/common/items/ring_items.lua\000'
info: adding font file /fonts/hypatiasanspro-black.otf
info: adding font file /fonts/hypatiasanspro-bold.otf
info: adding font file /fonts/hypatiasanspro-extralight.otf
info: adding font file /fonts/hypatiasanspro-light.otf
info: adding font file /fonts/hypatiasanspro-regular.otf
info: adding font file /fonts/hypatiasanspro-semibold.otf
debug: Loading module '\000/lua/keymap/keynames.lua\000'
debug: Loading module '\000/lua/keymap/keymapper.lua\000'
debug: Loading module '\000/lua/keymap/defaultkeymap.lua\000'
debug: Loading module '\000/lua/keymap/keyactions.lua\000'
warning: Key action not found debug_toggle_log_window for key F9
debug: Loading module '\000/lua/options/module_options.lua\000'
warning: GAL Exception: file : c:\Work\forge\main\code\src\libs\gpggal\DeviceD3D9.cpp(1486)
         error: device does not support hardware based instancing
warning: GAL Exception: file : c:\Work\forge\main\code\src\libs\gpggal\Device.cpp(93)
         error: invalid head index