title: PrestaShop- Cannot get any carriers to appear during checkout
body: <p>I am using PrestaShop 1.5.6.0. I cannot get a carrier to appear for order placement ("No carrier has been made available for this selection"). I would be really grateful if someone can tell me what is wrong.</p>
  
  <p>I have now spent almost 10 hours checking every menu for anything that seems even remotely like it could prevent the carrier from being available.</p>
  
  <p>Under Shipping->Carriers there is a carrier that came with the installation named "First Class Mail" which is enabled. Under Shipping->Shipping I selected "First Class Mail" as the default carrier.</p>
  
  <p>The country that was specified in the shipping address is enabled via Localization->Countries and the zone for the specified country is enabled in Localization->Zones. Localization->States has all stated enabled (the address is in the United States).</p>
  
  <p>The product dimensions &amp; weight are configured for the product being ordered and are within the ranges configured for "First Class Mail" carrier. Group access is checked for all groups (visitor, guest, customer) for this carrier. The zone for the destination address is checked in "Shipping Locations and Costs" for the carrier for the single range that is configured (0 to 1000 lb).</p>
  
  <p>When adding a new product or editing an existing product, under Shipping, there is a drop-down list of carriers containing ALL the carriers listed under Shipping->Carriers, both enabled and disabled. There is also a button that says "Unselect All". There is no apparent indication whether a carrier is selected or not in the drop-down, so I don't know if any of them are selected. Clicking "Unselect All" does not seem to do anything and there is NO method to select a carrier (only "Unselect"). In case "Unselect All" did indeed remove all carriers for the product (with no feedback or indication that this was done), I created another product where I did not click "Unselect all".</p>
  
  <p>The only shipping-related module I have enabled is "Shipping Estimate" and there does not appear to be anything in its configuration that enables/disables carriers.</p>