Whenever I attempt to launch the Official Fossils & Archaeology pack, it wouldn't launch. Since I set my launcher so that it won't close when the game launches, it stays open, but the game never launches. I've had this problem before so I tried reinstalling Technic, then I tried installing the modpack twice.
EDIT: Here's the log for OHGaming's Wild West.
https://pastebin.com/uvBWz3h3