OK, I will do this.
Uninstall !JoomlaComment - results in:
!Joomlacomment component uninstalled.
"Uninstall complete mode" parameter has value No : !JoomlaComment tables NOT deleted.
joscomment and josccleancache bots uninstalled.
!JoomlaComment was successfully uninstalled.
Then I install the component, resulting in some errors:
There was a problem with your installation
error when moving /usr/home/deb7602/domains/domainname.nl/public_html/cms/administrator/components/com_comment/plugin/joscomment.php
TO /usr/home/deb7602/domains/domainname.nl/public_html/cms/plugins/content/joscomment.php
Please, contact the support.
Thanks.
error when moving /usr/home/deb7602/domains/domainname.nl/public_html/cms/administrator/components/com_comment/plugin/joscomment.xml
TO /usr/home/deb7602/domains/domainname.nl/public_html/cms/plugins/content/joscomment.xml
error when moving /usr/home/deb7602/domains/domainname.nl/public_html/cms/administrator/components/com_comment/plugin/josccleancache.php
TO /usr/home/deb7602/domains/domainname.nl/public_html/cms/plugins/system/josccleancache.php
error when moving /usr/home/deb7602/domains/domainname.nl/public_html/cms/administrator/components/com_comment/plugin/josccleancache.xml
TO /usr/home/deb7602/domains/domainname.nl/public_html/cms/plugins/system/josccleancache.xml
domainname.nl is changed by me..
So, first I will drink a cup of coffee before I will move the files to the right folder.