!!! IMPORTANT !!! There are crucial changes in generators.yml
New:
Fixed error, which occured in some world names.
Added support for Multiverse worlds
How to update? 1. Shut down the server
2. Open generators.yml
3. Change all "_" to "," (ex. by Ctrl+H and remember to change ex. COAL,ORE to COAL_ORE after that)
4. Save the file and start server again
I'm sorry that you have to do all steps above by yourself, but unfortunatelly I'm on holiday trip right now and I have only weak laptop with me and I dont have much time to work, but also I wanted to post fix as soon as possible.