If you're getting 'Unable to load main Template' error messages when you click on the 'Shop' button on your forum, then you'll need to unarchive the SMFShop TAR.GZ file and upload some files manually:
- All the files and folders in the 'shop' directory (Shop.php, ShopAdmin.php, etc.) in the archive goes to Sources/shop on your forum.
- Shop.template.php and ShopAdmin.template.php go into Themes/default/
- Shop.english.php goes to Themes/default/languages
- shop.gif goes to Themes/default/images/english
This is due to a bug in the SMF 1.1RC1 package manager. Personally, I use SMF 1.0.5 so I've never had this error come up.