str5ever1

Iv been working day and night trying to make a soft skyblock modpack for low end pcs, recently its been runing great until i added a few new mods wich run fine in my reguler minecraft but i was using a older forge in my modpack so i replaced it with a new one, now when i updated it and tryed runing it acts like its going to run but then the launcher comes back up, no game runs :/ iv even tryed deleting the pack from my pc then redownloading it same thing. I need someone that i can send my pack to and figure out whts wrong. I have no clue . Please message me i need help.