Setting up Roaming Pokemon

I'm trying to add roaming Pokemon to my game, and while i'm sure I did everything right (I even ran the stuff by another person who's working on Essentials, and they said it looked fine as well), I had to have done something wrong, because I keep getting weird errors left and right. This is the latest error.

And this is what the roaming section looks like in my settings: Link

I feel like I'm at my wit's end with this, and everything I've tried has turned up in failure. I'd really appreciate if someone could tell me what I'm doing wrong, because after spending hours looking at this infernal array I cannot figure it out.

When does this error occur? Who are you trying to find? What's on the line 418 in PokemonMap?

Nobody, it just happens sometime after I activate my roamer's events. As for what's on 418:

Derxwna Kapsyla said:

Nobody, it just happens sometime after I activate my roamer's events. As for what's on 418:

Click to expand...

My first thought is that MetadataMapPosition is not defined for you, because the line calling that is
currentArea should be correct, assuming you set up your RoamingAreas hash correctly. So maybe you upgraded improperly or something, but I think MetadataMapPosition is missing.

I did a search for that string and I found this

I also did a search for MetadataMapPosition, and got this

Not sure how helpful any of this is unfortunately.

Have you tried starting a new game, rather than continuing with an existing save?