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.