Bottom of the Debug Menu (press F9) is an option to toggle the Internal Flag. This will print out error reports instead of just skipping turns when the flag is on.
Got it. Here's the report.
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Pokemon Bearberry
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Exception: NoMethodError
Message: undefined method `*' for nil:NilClass
PokeBattle_AI:2770:in `pbBetterBaseDamage'
PokeBattle_AI:2559:in `pbGetMoveScore'
PokeBattle_AI:3625:in `pbChooseMoves'
PokeBattle_AI:3623:in `each'
PokeBattle_AI:3623:in `pbChooseMoves'
PokeBattle_AI:4044:in `pbDefaultChooseEnemyCommand'
PokeBattle_ActualScene:2686:in `pbChooseEnemyCommand'
PokeBattle_Battle:2343:in `pbCommandPhase'
PokeBattle_Battle:2338:in `each'
PokeBattle_Battle:2338:in `pbCommandPhase'
PokeBattle_Battle:2286:in `pbStartBattleCore'
PokeBattle_Battle:2285:in `logonerr'
PokeBattle_Battle:2285:in `pbStartBattleCore'
PokeBattle_Battle:2275:in `loop'
PokeBattle_Battle:2298:in `pbStartBattleCore'
PokeBattle_Battle:2099:in `pbStartBattle'
PokemonTrainers:428:in `pbTrainerBattle'
PokemonTrainers:427:in `pbSceneStandby'
PokemonTrainers:429:in `pbTrainerBattle'
PokemonTrainers:426:in `pbBattleAnimation'
PokemonTrainers:426:in `pbTrainerBattle'
PokemonDebug:786:in `pbDebugMenu'
PokemonDebug:297:in `loop'
PokemonDebug:824:in `pbDebugMenu'
PokemonDebug:958:in `main'
Where's the undefined class?
NVM, just had to mess with the script in the Echoed Voice AI. Maybe IT was the problem. Hopefully, a Pokémon WILL attack if it knows Echoed Voice.