EconDesigner - 2009-06-22

I created a image upload form at http://econwebdesign.com/forms/use/ControlPanel/form1.php . The images upload fine and I am notified via email but if any of the image upload fields are left blank, the following error message shows for each blank field, "Filename cannot be empty in . . . "   Try it out and you'll see what I mean.  IF all the image upload fields are filled, it goes to the thank you page just fine.  Solutions?