Thank you for the new release, all is working fine.
May I suggest the following addition that would make it soo much easier to work when overriding classes through the excellent JLoader.
if (!class_exists('K2HelperRoute')) require_once($routerHelper);
in
site/components/com_jcomments/plugins/com_k2.plugin.php
This would allow other developers to override classes.
Thank you!