I had this installed fine and it was working no problem, then today when i go to checkout at step 3

Fatal error: Cannot use object of type queryFactoryResult as array in /home/freerang/public_html/shop/includes/modules/order_total/ot_payment.php on line 97

I had installed the Mod hole version, and it worked great before I added other stuff. I have removed the gift voucher option, but this doesn't cure it.

this is the code that line

if (ereg('^GIFT', addslashes($gv_result['products_model']))) {

Thanks I really need a discount option at checkout for Zen Cart 1.2.7.