Super effective berry damage calculation bug

[Quintessention]

(error message in attachments because I don't have enough posts to put image link in the post)
I had this issue when using an ice attack on a Starly with a Yache berry during testing.
Damage calculation was cancelled and the Starly recieved no damage from my Glalie's Frost Breath attack.
Looking through the code, I could not see what the issue was, but I'm not talented with Ruby.
Does anyone have any idea how to fix this?
I'm using the newest version of Essentials, and have added the Elite Battling System and Gen 6 mechanics. Other changes are solely visual.

Because my attachment seems to not have worked below is the error message I get:

Exception: NoMethodError
Message: undefined method '[]=' for nil:NilClass
PokeBattle_Move:1331:in 'pbCalcDamage'
PokeBattle_Move:1452:in 'pbEffect'
PokeBattle__Battle:3128:in 'pbProcessMoveAgainstTarget
PokeBattle_Battler:3086:in 'each'
PokeBattle_Battler:3086:in 'pbProcessMoveAgainstTarget
PokeBattle_Battler:3499:in 'pbUseMove
PokeBattle_Battler:3473:in 'loop'
PokeBattle_Battler:3502:in 'pbUseMove'
PokeBattle_Battler:3705:in 'pbProcessTurn'
PokeBattle_Battler:3704: 'logonerr'

 

[Maruno]

Try telling us which version of Essentials you're using, and what changes you've made to it.

 

[Quintessention]

Updated OP with the error message as the attachment doesn't seem to be showing. Maybe I just don't know how to use the site...