Thanks for your help!

This is the error I got:

Fatal error: Call to undefined function uc_cart_checkout_new_pane() in /web/docs/drupal/sites/all/modules/uc_coupon/uc_coupon.module on line 470

So I disabled the Store Coupon module, and now the checkout page shows up just fine!! Thanks again!

I was wondering if you had an idea as to how to proceed with coupons. We do issue coupons to our customers (in fact, there are many held by customers now intended to cash them in soon enough.), so we want this functionality.

We're using the latest version of the Store Coupon module, 5.x-1.2

Thanks in advance for any insight you have on this matter.