Bukkit

I was trying to simply add a crafting recipe to a gun and then reloaded the plugin and it said that there was an error so I check what it was and I have no clue how to fix it because it is in a place that I didn't even mess with. It was giving me problems with the gauss item description which is normally blank for me but now it is saying that it was expecting block mapping to stop but instead it started. I have now idea how to fix this other than resetting the config but then I lose all my work.