install on SMF 1.1.2 has a major problem though apparently it has worked for some. theres been some fixes offered but none of them have worked for me but maybe they will for you
another person with the same problem i think there are some fixes offered in the thread
http://www.daniel15.com/forum/index.php/topic,673.0.htmlthis one has some options to fix
http://www.daniel15.com/forum/index.php/topic,532.0.htmlincluding this quote
eugeniu, try copying the Shop.template.php file from the SMFShop archive to Themes/default/Shop.template.php. That should fix your problem.
Good luck i've tried everything manual install new download and install changing the package.xml to target 1.1.2 directly replacing shop.template.php etc but nothings worked hope you work it out
