Solved Fatal error: Class 'KunenaRoute' not found in ../administrator/components/com_kunena/install/sql/install/php/sampledata.php on line 147

Hi,

I tried to install Kunena 3.0 RC. But during the installation I get always teh same arror message:

Fatal error: Class 'KunenaRoute' not found in /homepages/18/d27822984/htdocs/_Alsen/administrator/components/com_kunena/install/sql/install/php/sampledata.php on line 147

I can see Kunena under the Components Menu, but if I click on it, I also get the error message.

What could it be?

I'm using Joomla 3.1.1.

Thanks
Michael

Try installing stable version (downloads page). Sometimes PHP is a bit slow on catching up on changed files and also I've got similar errors to yours, which go away in 10-15 minutes with no changes made.

You can also try to uninstall all Kunena extensions (search for Kunena in manage tab) and try again. It usually fixes issues like this, for example if copying a file failed during installation (Joomla happily ignores failures like that).

I used the version from 2013-05-15, because all others are not for Joomla 3.

I also uninstalled Kunena twice and reinstalled it, but the error was always the same.

That release isn't RC, it's the stable version.

Please check that System - Kunena Forum plugin has been turned on in your system. It's required to get Kunena to work.

I got this error when try install kunena 3.0.2
this problem solved when I install kunena 2.0.4 and upgrade to 3.0.2

Unable to post the configuration tool. Installation on 2.5.16 refuses to go cleanly.

Joomla 2.5.16
Affected versions of Kunena:
- pkg_kunena_v3.0.1_2013-06-29.zip
- pkg_kunena_v3.0.3_2013-10-20.zip
- com_kunena_v2.0.4_2013-01-18.zip

Can't install; always faced with "Sorry, installation failed on fatal error!"
Installation Details say only "Prepare Installation ... OK"
Apache error_log says "PHP Fatal error: Class 'KunenaRoute' not found in (...)/administrator/components/com_kunena/install/sql/install/php/sampledata.php

After each attempt I clicked Close and was told by com_installer that the installation was successful. So, I went to Extension Manager -> Manage, searched for Kunena, and saw what looked like a successful installation. I uninstalled all extensions by The Kunena Team due to the error and tried again with the newer version. Same results, so I uninstalled again.

After finding this thread, I attempted to install:
- com_kunena_v2.0.4_2013-01-18.zip

But I was told that I can't downgrade from 3.0.3. The uninstallation had not removed Kunena's versions table. I deleted the table and tried again.

This installation appeared successful, but Kunena did not put itself into my Components menu, and using its built-in upgrade tool resulted in a server error:
PHP Fatal error: require_once(): Failed opening required 'KPATH_ADMIN/liveupdate/liveupdate.php' (include_path='.:/usr/share/php:/usr/share/pear') in administrator/components/com_kunena/admin.kunena.php on line 25, referer: administrator/index.php?option=com_kunena

So, I next tried upgrading via com_installer. I used the newest version (3.0.3 cited above) but was told:

Can't install; always faced with "Sorry, installation failed on fatal error!"
Installation Details: "Prepare Installation ... OK"
PHP Fatal error: Class 'KunenaFactory' not found in (...)/administrator/components/com_kunena/install/model.php on line 699, referer: https://(...)/administrator/index.php?option=com_kunena&view=install&tmpl=component

Edit: At this point, I had Kunena in my Components menu, but attempting to use any of its menu entries, leads to the installer, which keeps producing the same fatal in the previous paragraph.

Some other errors in case they help:

PHP Notice: Use of undefined constant KPATH_ADMIN - assumed 'KPATH_ADMIN'
administrator/components/com_kunena/install/schema.php on line 13, referer: administrator/index.php?option=com_kunena&view=install&tmpl=component

PHP Notice: Trying to get property of non-object in administrator/components/com_kunena/install/schema.php on line 281, referer: administrator/index.php?option=com_kunena&view=install&tmpl=component

PHP Warning: require_once(KPATH_ADMIN/liveupdate/liveupdate.php): failed to open stream: No such file or directory in administrator/components/com_kunena/admin.kunena.php on line 25, referer: administrator/index.php?option=com_kunena

Perhaps api.php isn't being loaded?