I've upgraded Webforms to the latest version which fixed but Paypal Express CIVI payment processor is not working.
I've inputted the correct API information into the payment processor. I know its correct because we have used paypal pro successfully. The only issue with paypal pro was that when someone clicked the paypal button, it also had the same issue as paypal express. However when someone submitted the form it worked.
Paypal express doesn't work with either hitting submit or hitting paypal button.
CIVICRM 4.5.8 DRUPAL 7