Ubercart Authorize.Net checkout loops back to cart page I am trying to process an Ubercart order using Authorize.Net. I go through the Checkout and Review pages. When I submit the cart for credit card processing, I get returned to the Checkout page.

The only error I can find is:
    page not found  09/23/2014 - 17:39  cart/sites/all/themes/metroblocks/images/int.png

I think maybe the cart solution has an incorrect relative path somewhere to go to cart/../sites/all....

At one time I tried getting Commerce to work, but couldn't install Kickstart. I deactivated Commerce, but didn't uninstall it. Don't know if there is a conflict between Commerce and Ubercart.

Could someone please explain how I might troubleshoot/resolve this issue?

Using Drupal 7.32, Ubercart 3.7 on a shared hosting server, Apache2.
I reinstalled Drupal, and it was able to identify the missing image files. It was an issue with Drupal after all. Good thing I don't get dismissed so easily.