Ja tam nie widzę żadnej różnicy. Znajdź:
if ($this->ipsclass->vars['thx_topics_replies'])
{
$row['thanks_button'] = "<a style=\"cursor:pointer;\" id=\"thank_".$thank_pid."b\" onclick=\"thanks_add('thanks', '{$thank_pid}', '{$row['author_name']}','{$row['author_id']}')\"><img src=\"style_images/<#IMG_DIR#>/p_thanks.gif\" alt=\"Dzieki\" title=\"Dzieki\" /></a>";
}
if ($row['pid'] == $this->topic['topic_firstpost'])
{
$row['thanks_button'] = "<a style=\"cursor:pointer;\" id=\"thank_".$thank_pid."b\" onclick=\"thanks_add('thanks', '{$thank_pid}', '{$row['author_name']}','{$row['author_id']}')\"><img src=\"style_images/<#IMG_DIR#>/p_thanks.gif\" alt=\"Dzieki\" title=\"Dzieki\" /></a>";
}
if ($this->ipsclass->member['id'] == $row['author_id'] || !$this->ipsclass->member['id'])
{$row['thanks_button'] = "";
}
Zamień na:
if ( ( $this->ipsclass->member['id'] != $row['author_id'] ) AND ( ( ( $this->ipsclass->member['id'] == $this->topic['starter_id'] ) ) OR ( ( $row['author_id'] == $this->topic['starter_id'] ) ) ) )
{
$row['thanks_button'] = "<a style=\"cursor:pointer;\" id=\"thank_".$thank_pid."b\" onclick=\"thanks_add('thanks', '{$thank_pid}', '{$row['author_name']}','{$row['author_id']}')\"><img src=\"style_images/<#IMG_DIR#>/p_thanks.gif\" alt=\"Dzieki\" title=\"Dzieki\" /></a>";
}