A friend of mine asked for help with his osCommerce; his web hosting did recently upgrade to PHP 5.3, and as he's running osCommerce 2.2 MS2 he got plenty of error messages.
He decided to hide these until he replaces the whole webshop in a near future, and everything works well in exception of one thing: he can't do any changes in the payment modules. When he change a value it goes back to the previous one.
I've never worked with osCommerce before, so for this reason I hope someone here could get me on track.
Thank you in advance!