OS

Windows

GPU

AMD

Modpack (Optional)

Omega Adventure Pack 3.41

Game log

https://pastebin.com/KGW3Y1Lz
Password: "gPUxTdGTwX" (without the quotes)

Description

Refuses to launch, "A problem occurred running the Server launcher"

Additional mods:
orespawn-1.7.10-20.3.jar
Dynmap-2.3-forge-1.7.10.jar
CustomNPCs_1.7.10d(29oct17).jar
endlessids (numerous versions)

Obviously I removed NEID

You forgot to install the dependencies. Look at the readme again https://github.com/FalsePattern/EndlessIDs#dependencies

Most of my mods are not standalone and require FalsePatternLib and a mixin loader