Folks... you've got my head spinning in circles -- this is a default installation so far... and the contents of those two files I posted are exactly as they came "out of the box!" Mark... no variables ever appear in the URL once https://www.sandbox.paypal.com/us/cgi-bin/webscr is hit, until it gets back to ...

Okay, Mark... I'm looking to you for guidance as to how to implement the new 2.0 release of CSK!  What should we be doing????? [EDIT] Okay... pardon my exuberance, please! But I actually DO have a question here...  after downloading the CSK2.vsi file, I placed it in its own directory called CSK2 (original, huh?) and click on it... ...