[Crashing Over and Over?]

I'm not sure what happened but now I can't encounter wild Pokemon at all so that's a change that's worth mentioning. 

[Crashing Over and Over?]

Hello! I just recently started up Rejuvenation and am loving it except for one issue. It's crashing every time I try to encounter a wild Pokemon with the error:

 

Script 'PokemonEncounters' line 331:NoMethodError occurred.

undefined method 'blackFluteUsed' for nil:NilClass

 

I'm on a Mac and have the most recent version downloaded. It wasn't doing this from the start, this started occurring when I entered Goldenwood cave and will not stop anywhere now. Everything else works perfectly and I saw another post about this that mentioned a patch, but I was unable to find that patch if there is one. If someone's able to help that would be amazing