Using CiviCRM 4.4.4, Webform 7.x-4.11, Webform CiviCRM Integration 7.x-4.12, Paypal Website Payments Pro, Drupal 7.39
When I set up a payment through CiviCRM, credit card payment and Paypal payment work as expected. However, when I set up Payment through Webform CiviCRM integration, the credit card payment works as expected, but clicking on the Paypal button produces an error about email as shown in the attached screenshot. This happens with all my webform civicrm integrations. In other words when I use Webform CiviCRM integration, I have to give up paying with Paypal and since the Paypal button is automatically put on the screen the result is very unprofessional. The email that it shows which is supposed to be an error is my user name in Processor Details for Live Payments dialog.
Any help would be much appreciated, since I find the Webform CiviCRM integration module a great tool.
Paypal support hasn't been much help.
[Edit] It turns out that when I am using CiviCRM Webform integration and select the Paypal button the word "express" briefly appears in the credit card number field on the form. I think this is causing the problem because I don't see it when choosing Paypal from a standard CiviCRM payment page. I have tried different payment buttons from this page but the behavior stays the same.