wbb3 Page Problem

PHP-Code:

Fatal error: variable 'boardStructure' does not exist in cache resource 'board'
    You get more information about the problem in our knowledge base: http://www.woltlab.com/help/?code=11008 Information:
  error message: variable 'boardStructure' does not exist in cache resource 'board'
 error code: 11008
 file: /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/system/cache/CacheHandler.class.php (138)
 php version: 5.2.6-1+lenny13
 wcf version: 1.1.7 (Tempest)
 date: Tue, 29 Nov 2011 21:11:29 +0000
 request: /
 referer: 
   Stacktrace:
 #0 /var/www/vhosts/inter-roleplay.de/httpdocs/lib/data/board/Board.class.php(529): CacheHandler->get('board', 'boardStructure') #1 /var/www/vhosts/inter-roleplay.de/httpdocs/lib/system/cache/CacheBuilderBoardPermissions.class.php(41): Board::inheritPermissions(0, Array) #2 /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/system/cache/CacheHandler.class.php(173): CacheBuilderBoardPermissions->getData(Array) #3 /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/system/cache/CacheHandler.class.php(126): CacheHandler->rebuild(Array) #4 /var/www/vhosts/inter-roleplay.de/httpdocs/lib/data/user/AbstractWBBUserSession.class.php(62): CacheHandler->get('boardPermission...') #5 /var/www/vhosts/inter-roleplay.de/httpdocs/lib/data/user/WBBUserSession.class.php(112): AbstractWBBUserSession->getGroupData() #6 /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/system/session/UserSession.class.php(62): WBBUserSession->getGroupData() #7 /var/www/vhosts/inter-roleplay.de/httpdocs/lib/data/user/WBBUserSession.class.php(58): UserSession->handleData(Array) #8 /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/data/DatabaseObject.class.php(24): WBBUserSession->handleData(Array) #9 /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/data/user/User.class.php(67): DatabaseObject->__construct(Array) #10 /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/system/session/UserSession.class.php(33): User->__construct(8, NULL, NULL, NULL) #11 /var/www/vhosts/inter-roleplay.de/httpdocs/lib/data/user/WBBUserSession.class.php(51): UserSession->__construct(8, NULL, NULL) #12 /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/system/auth/UserAuthDefault.class.php(79): WBBUserSession->__construct(8) #13 /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/system/auth/UserAuthDefault.class.php(59): UserAuthDefault->getUserAutomatically(8, 'da6acaddd6f6981...', 'WBBUserSession') #14 /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/system/session/CookieSessionFactory.class.php(46): UserAuthDefault->loginAutomatically(true, 'WBBUserSession') #15 /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/system/session/SessionFactory.class.php(73): CookieSessionFactory->create() #16 /var/www/vhosts/inter-roleplay.de/httpdocs/lib/system/WBBCore.class.php(200): SessionFactory->get() #17 /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/system/WCF.class.php(98): WBBCore->initSession() #18 /var/www/vhosts/inter-roleplay.de/httpdocs/global.php(18): WCF->__construct() #19 /var/www/vhosts/inter-roleplay.de/httpdocs/index.php(7): require_once('/var/www/vhosts...') #20 {main} 

PHP-Code:

Fatal error: PHP warning in file  /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/system/io/File.class.php  (41): fopen() [<a  href='function.fopen'>function.fopen</a>]: Unable to access  /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/cache/cache.spiders.php
     Information:
  error message: PHP warning in file  /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/system/io/File.class.php  (41): fopen() [<a  href='function.fopen'>function.fopen</a>]: Unable to access  /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/cache/cache.spiders.php
 error code: 0
 file: /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/system/WCF.class.php (281)
 php version: 5.2.6-1+lenny13
 wcf version: 1.1.7 (Tempest)
 date: Tue, 29 Nov 2011 21:34:12 +0000
 request: /index.php
 referer: 
   Stacktrace:
 #0 [internal function]: WCF::handleError(2, 'fopen() [<a hre...', '/var/www/vhosts...', 41, Array) #1 /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/system/io/File.class.php(41): fopen('/var/www/vhosts...', 'wb') #2 /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/system/cache/source/DiskCacheSource.class.php(59): File->__construct('/var/www/vhosts...') #3 /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/system/cache/CacheHandler.class.php(176): DiskCacheSource->set(Array, Array) #4 /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/system/cache/CacheHandler.class.php(126): CacheHandler->rebuild(Array) #5 /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/system/session/CookieSessionFactory.class.php(130): CacheHandler->get('spiders') #6 /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/system/session/CookieSessionFactory.class.php(32): CookieSessionFactory::isSpider('Mozilla/5.0 (Wi...') #7 /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/system/session/SessionFactory.class.php(73): CookieSessionFactory->create() #8 /var/www/vhosts/inter-roleplay.de/httpdocs/lib/system/WBBCore.class.php(200): SessionFactory->get() #9 /var/www/vhosts/inter-roleplay.de/httpdocs/wcf/lib/system/WCF.class.php(98): WBBCore->initSession() #10 /var/www/vhosts/inter-roleplay.de/httpdocs/global.php(18): WCF->__construct() #11 /var/www/vhosts/inter-roleplay.de/httpdocs/index.php(7): require_once('/var/www/vhosts...') #12 {main} 