Opgradering af Joomla

Hejsa efter jeg opgradere fra Jommla 1.0.11 til 1.0.15 fik jeg problemer med VirtueMart.

Den forsøgt jeg så at opgradere men får nu følgende fejl:

You seem to have upgraded to a new VirtueMart Version recently.
Your Configuration File must be updated. so please proceed to the Configuration Form and save the Configuration once you are done with the settings.

Warning: main(/home/www/daneshop.net/administrator/components/com_virtuemart/classes/mainframe.class.php) [function.main]: failed to open stream: No such file or directory in /home/www/daneshop.net/administrator/components/com_virtuemart/global.php on line 37

Fatal error: main() [function.require]: Failed opening required '/home/www/daneshop.net/administrator/components/com_virtuemart/classes/mainframe.class.php' (include_path='.:/usr/share/php:/usr/share/pear') in /home/www/daneshop.net/administrator/components/com_virtuemart/global.php on line 37

Nogen som kan hjælpe mig med dette??

På forhånd tak.

Lars