This thread was moved from CurseForge. The original can be found at this link.

WenXin2:'

Forge v14.23.4.2745

Ore Stone Variants v3.6

I had initially set "Large Ore Clusters" to true, but after switching it back to false, I receive this crash when creating a new world. Changing it back to true fixes it.

Update (10/17/18):

• This issue was never fixed because the problem could not be reproduced. This thread has been left open for some time now, but should probably be closed in the near future. :c