did you make the necessary modifications for your theme?
http://custom.simplemachines.org/mods/index.php?mod=65go there, go to Manual Install Instructions for SMF on the right side, select your SMF Version
Make sure you've done the mods for your theme, some won't call to the default theme folder where the mod thinks it will be.. for this problem..
Move the included file "Shop.english.php" to "./Themes/default/languages".
Move the included file "ShopAdmin.template.php" to "./Themes/default".
Move the included file "Shop.template.php" to "./Themes/default".
Make sure you move those to that theme's folder (re-download the zip and manually put them there)
so
Move the included directory "shop" to "./Sources".
Move the included file "Shop.english.php" to "./Themes/YOURTHEMENAME/languages".
Move the included file "ShopAdmin.template.php" to "./YOURTHEMENAME/default".
Move the included file "Shop.template.php" to "./YOURTHEMENAME/default".
Seeing as yours is basically missing the text... you're probably missing Shop.english.php in your theme's languages folder.
Oh and btw, you spelled Computers wrong on your forum. (No New Posts Conputers and Hardware)