Just performed the upgrade and all seems well except when I go to view the calendar. If I choose demo.php I get Invalid Access - 8 and if I use my integrated page I get Invalid Access - 14...
Hrmm, okay, did that and put up my old license.php (as I opened up a whole new can of worms by releasing the license LOL) and we are back in business. Thanks for the help Brian and way to go on the security aspect of the script!