I have tried to install header tag controller. I am a newbie... and this excercise made me feel like total idiot so if there is a sould who could tell me what I might done wrong. I have followed instructions and installed Header Tag controller. Change all codes.....and arrived in totally messed my shopping cart.. with layout. and lovely message "Fatal error: Cannot instantiate non-existent class: box in /mysitename/includes/boxes/header_tags_controller.php on line 31"
So my boxes dissappear... and on top of it .. had no Header tag controller in my admin anyhow. It is not new installation of oscommerce so i follwed and chaged as notes were suggested.
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