in 3.6.x open product-imgsigstat.xml
Find:
Code:
<installcode><![CDATA[$db->query_write("INSERT INTO " . TABLE_PREFIX . "cron (weekday, day, hour, minute, filename, loglevel, title) VALUES (-1, -1, -1, 'a:1:{i:0;i:5;}', './signature.php', 1, 'Stats in Signature')");]]></installcode>
Change with:
Code:
<installcode><![CDATA[$db->query_write("INSERT INTO " . TABLE_PREFIX . "cron (weekday, day, hour, minute, filename, loglevel, varname) VALUES (-1, -1, -1, 'a:1:{i:0;i:5;}', './signature.php', 1, 'Stats in Signature')");]]></installcode>