This has got to be easy, but I am stumped.
I have set up several contribution pages. They work just fine as long as the donor is logged in to civi.
However, if the donor is not logged in, the system takes their credit card information on the form but when you press the contribute button, it blanks the form and does not continue on with the contribution process.
I assume that Civi allows unregistered users to contribute.
I am using Civi 4.6.9 on Drupal