Quote Originally Posted by lat9 View Post
Well, there's something else going on in the site. Perhaps check the .htaccess files. If that class-file is present, there's something specific to those sites that is resulting in that 404 ... which is ultimately preventing OPC's AJAX calls from working.
Ok I will have a look and try to work it out. I haven't had a chance to dig in really today. They are my own sites anyway, so kind of on the back burner. It's just weird that the others I have are the same set up and they work perfectly.