So I set up a custom FTB mod pack for my buddies and I to play on a server together, and we're having a peculiar bug. Every air block emits a block light level of 15, making nightmarish lighting updates whenever we load new chunks and preventing mob spawns. I can't figure out why this would happen, do you have any ideas? The mod pack is based off of the Ultimate pack and has removed several mods and added a few, mainly Galacticraft, Flan's mod, Ars Magica 2, and the Hat's mod. My first instinct is that Galacticraft somehow overwrote the air block ID, especially since I had to change some IDs to make it cooperate with Natura, but if anyone has an idea what's up I'd love to know.