Infinite Scroll jQuery Plugin bug

Hi, i have a view and i use Views Isotope with jQuery Infinite Scroll to load the element paged in the view.

If I insert a php field in my View, even if it's hidden, the infinite scroll don't stop at the end of the query, but it continue loading the last elements again and again... it never stop.

This is the tutorial i followed to integrate Infinite Scroll in Views Isotope:
http://drupal.org/node/1643486

Any suggestions? Maybe Views PHP affect the pager?

Thanks a lot and compliments for this great essential module!