cool hacks WorldPay Update Hack for WebStore sent in the following hack...
Recently, WorldPay changed the way they accept connections. This caused some difficulty for users of WebStore-WorldPay. Brian was able to discover the solution and sent it in.
All you have to do is find the following line in cgi-lib.pl
if (!defined $meth || $meth eq '' || $meth eq 'GET' || $type eq 'application/x-www-form-urlencoded')
and change it to:
if (!defined $meth || $meth eq '' || $meth eq 'GET' || $type=~ /application\/x-www-form-urlencoded/)