Upgrade Anleitung.', 'wpsg'), 'http://wpshopgermany.de/?p=2508'); ?>:

1. :
   get_option('wpshopgermany_version_installed') == '2.5.8') { ?>
   
   
    
   get_option('wpshopgermany_version_installed') !== false) { ?>

2. 
   
   
3. :
   
   

   uploads/wpsg_upgrade.zip