I recently upgraded to Cubecart 5 and now Authorize.net using the AIM mode will not work. I called authorize.net and had them help me get SIM mode working but when I try to use AIM it brings up a blank page. I have SSL on my page and cart and I went into my authorize.net settings and made sure that the Delimited Response settings matched Cubecart. I should also note that Authorize.net was working just fine on AIM mode before we upgraded. Please help.