My world began crashing on world load after updateing to Astral sorcery 1.8.1. Reverting to 1.7.2 alowed fixed this issue. I am curently testing to see if it had anything to do with storeing/extracting liquid starlight from a chalice, but the crashlog seemed to be pinting towards the onChLoad function in FluidRarityRegistry

Full Crashlog

crash-2017-11-14_21.26.24-server.txt

Issue due to Forge vesion, was using 14.23.0.2493, 1.8.1 was using functionality introduced in 14.23.0.2499.