Looks like guaranteed major faction empires isn't compatible with Dei 1.0. its loaded before Dei used it since release of the mod so know the basics.
this battle report should not exist in my opinion.
#### BATTLE ####
rom_epirus v rom_macedon
Minor Attacker v Major Defender
Ally Involved: false
Player Nearby: false
Modified autoresolve for rom_macedon
-- Result --
rom_epirus Won! (decisive_victory)