If you are doing fresh opencart 1.5.6.1 install by replacing the index.php file with the one provided with the Shoppica package, the following error could occur:

 Fatal error: Class ‘Play’ not found in /home/yourdir/index.php on line 218

If you use Shoppica version lower than 2.2.5 you can go through these steps in order to fix this issue:

1. You could use the index.php file attached to this post, which is adjusted to opencart 1.5.6.1 + Shoppica

2. You could open index.php and delete the following lines:

$registry->set('play', new Play($registry));
$registry->set('ebay', new Ebay($registry));
$registry->set('amazon', new Amazon($registry));
$registry->set('amazonus', new Amazonus($registry));

The easiest way to avoid this (and future errors) is by manually editing index.php when installing Shoppica.

Regards,
ThemeBurn team