I've been enjoying this mod, but for some reason Crystal Spiders quit spawning for me. I've seen maybe three in the past 6 hours of me playing. Oh yeah, I've also been camping in the hallow where I use to farm them and using battle potions, attraction potions, and war potions. I have other mods installed like Calamity and Fargo's Soul mod. I'm curious what the actual spawn conditions are for Crystal Spiders since very little has changed since they quit spawning for me. (To put it into perspective of how much I've been farming and not seeing any spiders. I have over 1000 True Pixie Dust and exactly 0 Crystal Fangs.)
Side note, be careful with extra mods. The Soul of Terraria from Fargo's Soul Mod has a time stop ability and I killed the Scourge of Darkness during that time stop ability and nothing dropped from the boss. I searched my whole arena along with having magnets on and everything. That's the only main issue I had, everything else is good apart from low spawn rates of certain enemies, but I attribute that to possibly being lower priority due to the amount of mods I have installed.
Edit: More than 24 hours have passed since I made this comment. I have somehow managed to get spiders spawning again. so many in fact my game was dropping frames. I think, but could be wrong, that the "Soul of Terraria" as mentioned before might have too many particles flying about prohibiting crystal spiders from spawning for some reason. I took the item off and suddenly there were 40 crystal spiders once I knocked a few of the other remaining enemies out. I now have close to 100 crystal fangs. I'm not sure if I'll need more, but could likely go back and farm for more. Now that I think about it more, there is an active item limit in game to prevent too many things from spawning. The Soul of Terraria has a lot of moving parts, on top of me playing as a summoner with way too many summon slots. I have concluded that the reason I didn't get my drop from Scourge last time was because of the limit.