Launcher Crash

[SkyBois]

Your GTNH Discord Username

No response

Your Pack Version

2.1.5

Your Server

SP

Java Version

Java 8

Type of Server

None

Your Actions

I attempted to start GTNH multiple times, and the launcher keeps crashing at either 83% or 99%, both at the "Post Initialization: Loading Gregtech" text

Crash Report

https://paste.ee/p/L8f8d

Final Checklist

• [X] I have searched this issue tracker and there is nothing similar already. Posting on a closed issue saying the crash still exists will prompt us to investigate and reopen it once we confirm your report.
• [X] I can reproduce this crash consistently by following the exact steps I described above.
• [X] I have asked other people and they confirm they also crash by following the exact steps I described above.

[LazyFleshWasTaken]

Are you on curse forge?

Also, 2.1.5 is a very, very old version. I'd try a newer one.

[SkyBois]

I'm using MultiMC; I'll try a newer version and get back to you, I was under the impression that it was the newest one 🤦

[SkyBois]

I just opened 2.5.0, it works fine :)