Hey, i've problems in the Admin-Backend with your quickstart installation. It throws the error "Error - An error has occurred." in every menu item i clicked on.

The menu item "Extentions / Moduls" throws the error "Error
Out of sort memory, consider increasing server sort buffer size SQL=SELECT a.id, a.title, a.note, a.position, a.module, a.language,a.checked_out, a.checked_out_time, a.published as published, e.enabled as enabled, a.access, a.ordering, a.publish_up, a.publish_down,l.title AS language_title, l.image AS language_image,uc.name AS editor,ag.title AS access_level,MIN(mm.menuid) AS pages,e.name AS name FROM `#__modules` AS a LEFT JOIN `#__languages` AS l ON l.lang_code = a.language LEFT JOIN #__users AS uc ON uc.id=a.checked_out LEFT JOIN #__viewlevels AS ag ON ag.id = a.access LEFT JOIN #__modules_menu AS mm ON mm.moduleid = a.id LEFT JOIN #__extensions AS e ON e.element = a.module WHERE (a.published IN (0, 1)) AND a.client_id = 0 AND e.client_id =0 GROUP BY a.id, a.title, a.note, a.position, a.module, a.language,a.checked_out,a.checked_out_time, a.published, a.access, a.ordering, l.title, l.image, uc.name, ag.title, e.name,l.lang_code, uc.id, ag.id, mm.moduleid, e.element, a.publish_up, a.publish_down,e.enabled
An error has occurred.

I don't get any utilizable debug information

The default language is en-GB, the system informations are attached.

Any ideas?

Best regards
Christian