Index: uc_auction.module
===================================================================
--- uc_auction.module	(revision 4)
+++ uc_auction.module	(working copy)
@@ -214,6 +214,8 @@
       if ($is_curr_auction) {
         $form['base']['auction']['start_price_disp'] = $form['base']['auction']['start_price'];
         $form['base']['auction']['start_price_disp']['#type'] = 'textfield';
+        // Addition line below ensures the form can be submitted
+        $form['base']['auction']['start_price_disp']['#required'] = FALSE;
       }
 
       if (user_access('administer store')) {