Solved Permanent Installation error

When trying to install Kunena 4^th and now 5^th version, every time I am getting still the same error and cancellation of installation.

The Message is:

Kunena Installation Failed!
Sorry, installation failed with following error:

Warning: DOMDocument::load(): I/O warning : failed to load external entity "/home/u166793/outdoorqrporg/www/administrator/KPATH_ADMIN/install/install.xml" in /home/u166793/outdoorqrporg/www/administrator/components/com_kunena/install/schema.php on line 363

Warning: Invalid argument supplied for foreach() in /home/u166793/outdoorqrporg/www/administrator/components/com_kunena/install/schema.php on line 529

Fatal error: Class 'KunenaRoute' not found in /home/u166793/outdoorqrporg/www/administrator/components/com_kunena/install/sql/install/php/sampledata.php on line 159

Advices to clean the cache and other similar tips do not give any positive result. I get all the same error again and again.
Killing a table in MySQL, removing related records in the database and kunena-folders with the whole content in Joomla file structure have no effect in whole.

Are there some more tips to install Kunena?

P.S. I have tried to install it by uploading a package, from URL and from the folder.

Hello,

The other way is to uncompress the kunena package, the you will find an archive nammed plg_system_kunena_v5.0.0.zip, you need to install this one and check after that in Joomla! plugins in directory system, the plugin kunena is right enabled.

Then you can re-try to install the K5.0 package

or try install it by url

xillibit wrote: …plg_system_kunena_v5.0.0.zip, you need to install this one …
Then you can re-try to install the K5.0 package

Thank you very much! It works!