Modpack works on original creator's computer, doesnt work on anyone elses

None of us can figure out what’s happening. The modpack works on the original guys computer, but once he sends us the zip file and we import it into the minecraft twitch launcher, the game crashes on boot. At first we thought it was a mixin problem but none of us really understand the crash logs enough to be able to figure out what the problem is.

sorted dont worry about this