Idea K 1.6.1: Subscription emails stopped being sent

Hi,

I've been using Kunena 1.6.1 for 6 months without issue but last Friday it stopped sending out subscription emails so users no longer no when a tpoic has been replied to.

The only change I made to the site that site that day was to update jReviews to v3.0. I don't see how this would affect Kunena emails but it does seem a coincidence. I have not changed any global Joomla email settings or mailserver settings. Any ideas?

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Joomla default template details : jp_neutral | author: Joomlaplates.com | version: 1.0 | creationdate: April 2009

Kunena version detailled: Installed version: 1.6.1 | Build: 3858 | Version name: Timu | Kunena detailled configuration:

Warning: Spoiler!

[th]Kunena config settings:[/th]

board_title	The Environmental Illness Resource Forums
board_offline	0
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offline_message	<h2>The Forum is currently offline for maintenance.</h2> Check back soon!
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Third-party components: AlphaUserPoints: Disabled or not installed | CommunityBuilder: Disabled or not installed | Jomsocial: Installed (Version : 2.2.2) | UddeIm: Disabled or not installed

Plugins: System - Mootools12: Disabled | System - Mootools Upgrade: Enabled | JFirePHP: Disabled or not installed | Kunena Discuss: Disabled or not installed | Kunena Search: Disabled or not installed | My Kunena Forum Menu: Enabled (Version : 1.6.0-RC1) | My Kunena Forum Posts: Disabled or not installed

Modules: Kunena Latest: Enabled (Version : 1.6.0-RC2) | Kunena Stats: Disabled or not installed | Kunena Login: Disabled or not installed

There is no support for K 1.6.1. Please upgrade to K 1.6.4 as well as upgrade any Kunena add-on software that you are using, to their latest versions (those versions are not supported either).

See K 1.6 Upgrade Guide