I just discovered a bug in the new 1.80 build of ruleset.2da:
If you change line 412 CHARGEN_BASE_ABILITY_MIN_PRIMARY to any value of 12 or greater then the CharGen system assumes that the primary ability score is Strength. I have tested this with human, dwarves, half-orcs, males, females, barbarians, fighters, wizards, sorcerers, and rogues. The default value of 11 works fine. I have not tested any lower numbers.
Bug reported to BeamDog via ServiceDesk.