[Error] Game crashes when using the Daycare in version 20.

[Seenit45]

I'm using an unmodified version 20, Whenever I'm trying to select any pokemon to drop at the day care, I get this error after which the game crashes:

Script error in event 3 (coords 4,4), map 27 (Lerucean Town)
Exception: NoMethodError
Message: undefined method `pbCheckAble' for #<Interpreter @event_id: 3>

***Full script:
!pbCheckAble(pbGet(1))
Backtrace:
(eval):1:in `execute_script'
033:Interpreter:143:in `eval'
033:Interpreter:143:in `execute_script'
034:Interpreter_Commands:426:in `command_111'
034:Interpreter_Commands:29:in `execute_command'
033:Interpreter:133:in `block in update'
033:Interpreter:90:in `loop'
033:Interpreter:90:in `update'
032:Scene_Map:163:in `block in update'
032:Scene_Map:162:in `loop'

Does anyone know how to fix this?