i: Any reason why your not just using the CurseForge app to make your custom pack (easier) ii: All your mods, where did you download them from?
iii: Has this pack ever worked? OR has it always had these weird crash issues?
I have looked at the logs, other then some mods spitting out the normal broken recipe crap I don't really see anything wrong - No crash. Now is the pack crashing and closing on its own? OR is it freezing up and you have to force close it?
I downloaded the app, still no difference, my game will not work. I download from here https://www.curseforge.com/minecraft/mc-mods except for the MrCrayfish mods, I downloaded them from his website. It used to always work, I'm not sure why the game suddenly started closing on its own whenever I launch it. also I get this message when I try to play.