As I stated in my original post, deleting the _mmServerScripts folder was one of the first things I tried. I tried it again and still the same error message. I have now copied my registration.php file to another computer with Dreamweaver CS6 as well and do not get the error message. I then uninstalled DataBridge, uninstalled Dreamweaver CS6, restarted my computer, reinstalled CS6 and reinstalled DataBridge and STILL get the error message. I am having the problem on a computer running Vista and no error on a Windows 7 OS. I have attached the file in question to see if you can figure anything out.
Update: I created a brand new registration page from scratch using Security Assist-Create Security Pages and immediately after it was created I get the same error message scenario. Hopefully this helps.