I do not think this problem has anything to do with
Kunena.
Your configuration report shows that you are using
sh404SEF. Please ask the forum moderators to move this topic to the
sh404SEF
category.
Please read the
sticky topic in that category:
To what extent does sh404SEF support Kunena?
.
The
Kunena Search plugin
does not work with
sh404SEF. This is why you are having your problem.
Also, you should know, that the third-party
Kunena template you are using from
Joomlashine
will not work with K 4.0.5. If you do not believe me, try to look at any user profile on your forum. It will produce a fatal error if you (or anyone else) has uploaded attachments to your forum.
You should
also change the
forum integration plugins
as indicated in
red text below:
Kunena - AlphaUserPoints Disabled
Kunena - Community Builder Disabled
Kunena - Gravatar
Disabled
Kunena - JomSocial
Disabled
Kunena - Joomla Enabled: access=1 login=1
Kunena - Kunena Enabled: avatar=1 profile=1
Kunena - UddeIM Enabled:
Disabled