If the links in your Information infobox (/templates/(your template name)/boxes/information_table.php) aren't working, this is because the session ID is showing up in the wrong spot of the URL.

To fix this, find the following lines of code in the file listed above...

$filename_information = tep_href_link(FILENAME_INFORMATION) . '?info_id=' . $row['information_id'];
$informationString .= '<a href="' . $filename_information . '">' . $row['info_title'] . '</a><br>';

...replace it with:

$informationString .= '<a href="' . tep_href_link(FILENAME_INFORMATION,  'info_id=' . $row['information_id'] ) . '">' . $row['info_title'] . '</a><br>';