I see, the dead faction bug, I thought it was a missing option in your mod. Sorry. For future, what you need is a reset diplomatic stance in the campaign script.
Code:
monitor_event FactionTurnEnd FactionType slave
if I_NumberOfSettlements akni < 0 ;;;if akni dead
console_command diplomatic_stance akni england neutral
console_command diplomatic_stance akni france neutral
console_command diplomatic_stance akni sicily neutral
console_command diplomatic_stance akni milan neutral
console_command diplomatic_stance akni ellenobaktrioi neutral
console_command diplomatic_stance akni moors neutral
console_command diplomatic_stance akni portugal neutral
console_command diplomatic_stance akni spain neutral
console_command diplomatic_stance akni egypt neutral
console_command diplomatic_stance akni scotland neutral
console_command diplomatic_stance akni normans neutral
console_command diplomatic_stance akni sarumatah neutral
console_command diplomatic_stance akni byzantium neutral
console_command diplomatic_stance akni turks neutral
console_command diplomatic_stance akni iliret neutral
console_command diplomatic_stance akni romani neutral
console_command diplomatic_stance akni hre neutral
console_command diplomatic_stance akni aztecs neutral
console_command diplomatic_stance akni russia neutral
console_command diplomatic_stance akni poland neutral
console_command diplomatic_stance akni carnaites neutral
console_command diplomatic_stance akni papal_states neutral
console_command diplomatic_stance akni saxons neutral
console_command diplomatic_stance akni timurids neutral
console_command diplomatic_stance akni aksum neutral
console_command diplomatic_stance akni skuoa neutral
console_command diplomatic_stance akni mongols neutral
console_command diplomatic_stance akni denmark neutral
end_if
if I_NumberOfSettlements england < 0 ;; if england dead
console_command diplomatic_stance england akni neutral
console_command diplomatic_stance england france neutral
;;; ect; ect for all factions
end_if
end_monitor
It prevent the dead faction bug but you will need to adjust it to your mod, replace factions internal names, and start a new game. Don't know the advisor well enough to say more or what Dac did to remove it.