Help - Error Message

[acrylic-display]

Hi

 

I have tried to install the contribution fast-easy-checkout2.0 and have had a bit of trouble so have gone back to the original but now I am having this error message when I try and open a page, can someone tell me what I have done wrong?

 

Fatal error: Cannot redeclare tep_show_category() in /home/acrylic/public_html/catalog/includes/boxes/categories.php on line 13

 

 

Thanks

 

Adam

[acrylic-display]

Anyone know how to fix this error?