I have installed the OT Orthodontis at hno-hh-city.de/ without problems. After login i saw there is a Joomla Update to 2.5.8. I have select an than i cklick to update. Than there comes the following message:

Warning: require_once(.../html/hno_hh_city_de/libraries/cms/cmsloader.php): failed to open stream: No such file or directory in .../html/hno_hh_city_de/libraries/cms.php on line 18 Fatal error: require_once(): Failed opening required '.../html/hno_hh_city_de/libraries/cms/cmsloader.php' (include_path='.:/usr/share/php') in .../html/hno_hh_city_de/libraries/cms.php on line 18

Whats the Problem?

it's error from joomla core after you click update ?

Can you download update path file and install direct from admin ?

Regards