EWG - Crashes with 'Failed to calculate Biome Rarity'

[Braden]

Version: 7.2.19 (Latest) Spigot UN: Turttles Issue:

When I start up my world WITHOUT editing anything in the settings folder, everything starts up correctly. However, as soon as I edit the biomes in the settings folder, I get the error below.

http://hastebin.com/payofoyoqu.xml

All I do in the biome files is set a few to disabled (http://hastebin.com/atabasoziv.css) and remove strongholds from the few that I still have enabled. I then keep the settings folder in my world file, and remove all of the other files(excluding the settings file, leaving it as the only one). I then start my server and wait. At first things seem to be okay, and then it just crashes with the biome rarity error.

Thank you for your time,

Turttles