Re: Epirot Problem
Are you sure it was line 556 and not 566? Looking at my unmodded 1.6a there's no reason for that error, and I can fight battles with epiros (both attacker and defender) against epirot family with no crash. Check in the named location to see if the file's there but I think something happened when you installed the mod, because the file should be there. Try re-installing 1.6 and then 1.6a again and then check to make sure the file actually installed in data/models_unit.
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