Error nach Installation

WCF::destruct() Unhandled exception: PHP notice in file /var/www/clients/client1/web51/web/wcf/lib/system/application/ApplicationHandler.class.php (123): Undefined index: application


#0 /var/www/clients/client1/web51/web/wcf/lib/system/application/ApplicationHandler.class.php(123): wcf\system\WCF::handleError(8, 'Undefined index...', '/var/www/client...', 123, Array)
#1 /var/www/clients/client1/web51/web/wcf/lib/system/request/RequestHandler.class.php(48): wcf\system\application\ApplicationHandler->getApplications()
#2 /var/www/clients/client1/web51/web/wcf/lib/system/SingletonFactory.class.php(27): wcf\system\request\RequestHandler->init()
#3 /var/www/clients/client1/web51/web/wcf/lib/system/SingletonFactory.class.php(56): wcf\system\SingletonFactory->__construct()
#4 /var/www/clients/client1/web51/web/wcf/lib/system/session/SessionHandler.class.php(530): wcf\system\SingletonFactory::getInstance()
#5 /var/www/clients/client1/web51/web/wcf/lib/system/WCF.class.php(174): wcf\system\session\SessionHandler->update()
#6 [internal function]: wcf\system\WCF::destruct()
#7 {main}

Thu, 25 Sep 2014 05:25:15 +0000
Message: PHP notice in file /var/www/clients/client1/web51/web/wcf/lib/system/language/LanguageFactory.class.php (255): Undefined index: languages
File: /var/www/clients/client1/web51/web/wcf/lib/system/WCF.class.php (303)
PHP version: 5.4.33-1~dotdeb.1
WCF version: 2.0.9 (Maelstrom)
Request URI: /acp/
Referrer: 
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2159.4 Safari/537.36
Information: ""
Stacktrace: 
  #0 /var/www/clients/client1/web51/web/wcf/lib/system/language/LanguageFactory.class.php(255): wcf\system\WCF::handleError(8, 'Undefined index...', '/var/www/client...', 255, Array)
  #1 /var/www/clients/client1/web51/web/wcf/lib/system/language/LanguageFactory.class.php(158): wcf\system\language\LanguageFactory->getLanguages()
  #2 /var/www/clients/client1/web51/web/wcf/lib/system/language/LanguageFactory.class.php(76): wcf\system\language\LanguageFactory->findPreferredLanguage()
  #3 /var/www/clients/client1/web51/web/wcf/lib/system/WCF.class.php(358): wcf\system\language\LanguageFactory->getUserLanguage(NULL)
  #4 /var/www/clients/client1/web51/web/wcf/lib/system/WCFACP.class.php(44): wcf\system\WCF->initLanguage()
  #5 /var/www/clients/client1/web51/web/wcf/acp/global.php(19): wcf\system\WCFACP->__construct()
  #6 /var/www/clients/client1/web51/web/acp/global.php(16): require_once('/var/www/client...')
  #7 /var/www/clients/client1/web51/web/acp/index.php(9): require_once('/var/www/client...')
  #8 {main}
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