I’m having trouble on Mac.
Erased /minecraft folder to get a completely fresh restart (backed up worlds and such to add later)
Started Minecraft with force update to get fresh .jar.
Erased everything with OptiFine/MagicLauncher leftover.
So, starting from a clean slate:
 Downloaded ModPack.
 Unzipped, put on Desktop as “MCNSAModPack”.
 Already made sure of this!
 Terminal opened, navigated to the correct folder. Typed in sh modpack.sh (which isn’t even a file inside the folder?) and I get “No such file or directory” error.
The contents of the folder:
—(mods and their jar files in a folder)
Double clicking MCNSAModPack.jar comes up with an error, saying it can’t launch.