umm you should not, there is no need to include an item for a trade. I think there is a flaw in the code, find line 96:
PHP Code:
if(!empty($itemgiven)){
change it to:
PHP Code:
if($itemgiven != "none"){
This should fix your problem. Now I just regret I have not overhaul the trade system... Its weird though, this glitch should exist for the beta version already and no one had pointed it out before? o_o