I'm trying to setup a GravityForm to accept payments via Authorize.net. It's apparently conflicting with Shopp, which is also using Authorize.net. When I install the GF add-on my site errors out with
Fatal Error: Cannot redeclare class AuthorizeNetARB in /wp-content/plugins/shopp/gateways/AuthorizeNet/Authorize.net.php on line 393
Someone else had the same problem at this link but I'm not much of a coder and would like to find a way to correct this in GF rather than dicker around in Shopp.
Any help certainly appreciated!