Hi :
My store is run on OSC 2.3.1, I got the same problem.
Do I download this version: http://www.oscommerce.com/community/contributions,2679/category,1/search,PayPal+IPN+2.3.4.6+module
it said that it can support OSC 2.2MS2, does it support OSC 2.3.1?
There are too many version in there.
Does it can support IPN module for OSC 2.3.1 ?
" osCommerce PayPal IPN Module v1.0 For 2.2MS2"
or
" Paypal_IPN_2_3_4_7 Fix for QTPro v4.51b and/or Discount Coupon Codes 3.32 "
thanks a lot!
Paul Chan