Easy question

Sorry for the dumb question, I have no time to find this error so I decided to ask here.
I added new sets of new furnaces with new list for crafting, but when I finish crafting the item I am disconnected from the server.
Here a picture of the error:
http://img340.imageshack.us/img340/6650/error1ud.jpg
I think it's something easy to resolve but I'm out of time to find a way to solve it like your help.

If possible have another dumb question, how do I remove these drawings on gshop.data, which I edit the file?
http://img52.imageshack.us/img52/856/error2xe.jpg

Surely you must be an item that does not exist in elements.data, or files. Gfx and Similar defects are causing a crash.

The gshop you have to change the files in the surface and interfaces. I have not seen probolema to leave so I made some basic changes in the images only.

Thank you for responding, but what you said I know, I was looking for a precise answer at least for the gshop.
Added new lists to crafting, but did so with great hurry because my time for editing is very limited, this error may be in the list of craft in that part?

Take the item you are trying to forge GSHOP put it in, see if you can buy and use without error. Oh you already eliminates a doubt (Problem in gfx and ecm).