Solved Kunena 4.0.6 install fails

Joomla 3.4.4, new installation with sample data installed. Trying to install Kunena 4.0.6. The web page display shows nothing useful (see the attachment)



My HTTPD error log shows:

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[Wed Oct 21 18:13:27 2015] [warn] [client 10.0.0.130] mod_fcgid: stderr: PHP Warning: DOMDocument::load(): I/O warning : failed to load external entity "/var/www/clients/client3/web16/web/administrator/KPATH_ADMIN/install/install.xml" in /var/www/clients/client3/web16/web/administrator/components/com_kunena/install/schema.php on line 281, referer: oscrebeta.incad.com/administrator/index....staller&view=install
[Wed Oct 21 18:13:27 2015] [warn] [client 10.0.0.130] mod_fcgid: stderr: PHP Warning: Invalid argument supplied for foreach() in /var/www/clients/client3/web16/web/administrator/components/com_kunena/install/schema.php on line 422, referer: oscrebeta.incad.com/administrator/index....staller&view=install
[Wed Oct 21 18:13:27 2015] [warn] [client 10.0.0.130] mod_fcgid: stderr: PHP Fatal error: Class 'KunenaRoute' not found in /var/www/clients/client3/web16/web/administrator/components/com_kunena/install/sql/install/php/sampledata.php on line 147, referer: oscrebeta.incad.com/administrator/index....staller&view=install

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Any and all help/advice welcomed.

Thanks
Norm

go to plugins, enable system - Kunena plugin

Under Plugins, "System - Kunena Forum" already shows as enabled. As well, the following are also listed, with status:

Kunena - AlphaUserPoints Integration (disabled)
Kunena - JomSocial Integration (disabled)
Kunena - Community Builder Integration (disabled)
Kunena - Gravatar Integration (disabled)
Kunena - UddelIM Integration (disabled)
Kunena - Kunena Integration (enabled)
Kunena - Joomla Integration (enabled)

I'm a little surprised that two of them show as enabled since the installation didn't really seem to even get off the ground. I don't think it's a permissions issue, since the com_kunena directory was created.

Other thoughts?

Well, this just gets stranger. I noticed in the administrator area that "Kunena Forum" was listed under Components. I selected the Dashboard, and was suddenly presented with the list of logged events that a (successful?) installation would (I guess) typically put up. Right after that I was redirected to the actual Dashboard.

It seems that Kunena is installed and functional, although I am obviously a little uncertain since the installer had said it failed, and my HTTPD log shows several error messages. Perhaps issues with the installer that should be addressed in a future release?

Then I think you have a conflict plugin by a 3rt party. But good to see its installed for you.

Nope, no plug-in conflict, because there were no plug-ins. I installed Joomla 3.4.4, then attempted to install Kunena. There was nothing else installed, and Joomla was pretty much out of the box. I set the SuperUser password, and the title of the site, and installed the sample data purely to have something on the home page. That was it -- about as pure as you can get.