Issue Description:

I removed the seed drops listed when using the /mt seeds command, and the game crashes with mentions of Biomes o Plenty.

What happens:

I load up a world, it generates for a bit and crashes.

What you expected to happen:

The world to load up and not crash.

Script used (Please Pastebin or gist your script, posting an unpasted or ungist'd script will automatically close this issue):

https://pastebin.com/HscSj584

Minetweaker.log file (Please Pastebin or gist your file, posting an unpasted or ungist'd file will automatically close this issue):

https://pastebin.com/zRP22ghU

Affected Versions (Do not use "latest"):

• Minecraft: 1.10.2
• Forge: 12.18.3.2316
• Crafttweaker: 3.0.26

Your most recent log file where the issue was present:

https://pastebin.com/B3Eyxqjn

Forge issue that has been fixed in 1.11/1.12