Crashes when loading world

[Clawd]

So i have been playing for like a week and now that i had made a lot of progress i made an Electric Enchanter and i was testing it up until i placed a ruby sword on it as soon as i clicked to place it inside it crashed my game so i decided to load it again, however, without success and i don't know what to do about this error.

http://pastebin.com/jcREHwgD

Maybe by removing the ruby sword from my inventory data or by modifying the map data to remove the block (Electric Enchanter) would fix it, but i don't know how to do that so i need help on it, thanks.

 

[AetherPirate]

Backup your world. Go to Configs and open forge.cfg. Change the two entries that reference erroring entities and blocks from false to true. Launch again and see if it loads. You will lose some blocks and whatever was in them. Close and set those entries back to true.