Hi,

Shortly after entering the nether (and maybe already going back), my game started crashing and I can't enter the world anymore, it will crash immediately.

It seems that thaumcraft is causing this.
Pastebin crash report here: https://pastebin.com/KZ4TrRUv

I'm running the foolcraft 3 pack.

Hope you can fix it so I can recover my world.

Oh, found this error report in your other repo, not sure if I posted this wrong?

Azanor/thaumcraft-beta#858

Upgraded the pack (foolcraft 3), that downgraded thaumcraft and that fixed it, i'll close this as I guess it's basically a duplicate.