Emjainteractive ShippingOption

1. Open app/code/local/Emjainteractive/ShippingOption/etc/config.xml and find the following section:

   <controller_action_predispatch_checkout_onepage_saveShippingMethod>
       <observers>
           <emjainteractive_shippingoption_observer>
               <class>emjainteractive_shippingoption/observer</class>
               <method>saveShippingMethod</method>
           </emjainteractive_shippingoption_observer>
       </observers>
   </controller_action_predispatch_checkout_onepage_saveShippingMethod>
   

2. Replace it with:

   <controller_action_predispatch_checkout_onepage_saveShippingMethod>
       <observers>
           <emjainteractive_shippingoption_observer>
               <class>emjainteractive_shippingoption/observer</class>
               <method>saveShippingMethod</method>
           </emjainteractive_shippingoption_observer>
       </observers>
   </controller_action_predispatch_checkout_onepage_saveShippingMethod>
   
   <controller_action_predispatch_firecheckout_index_saveShippingMethod>
       <observers>
           <emjainteractive_shippingoption_observer>
               <class>emjainteractive_shippingoption/observer</class>
               <method>saveShippingMethod</method>
           </emjainteractive_shippingoption_observer>
       </observers>
   </controller_action_predispatch_firecheckout_index_saveShippingMethod>
   

3. Clear Magento cache