Crash at startup java.lang.IndexOutOfBoundsException #4433
It was after updating a few mods in a (rather large) modpack. Unfortunately the Twitch launcher doesn't have a 'sort by release date' or 'sort by most recently updated' mode so I'll have to go through manually and see what was changed. It's late for me so I'll check tomorrow!
Okay, so according to the mods folder since the 24th I've added:
All of these are updates as opposed to new mods added (I did remove BoP then realised that removing it changes the block ID's for half the items in the game changing cursed earth to blazing pyrotheum and such ;_;) but I don't know how this could cause this issue. If there's more info you need (logs and such) let me know!