http://pastebin.com/vCUMqKvN

No fastcraft or optifine involved (both are disabled for testing).

Does this happen with only botania?

With just latest forge, bauble and botania the world loads up fine, any idea what mod may be doing it before closing this?

¯_(ツ)_/¯

If you install fastcraft you can use one of its config options to have fastcraft trace issues like that, would make it a lot easier to find and identify the issue.