Brauche mal bitte eure Hilfe

Fatal error: PHP warning in file
/home/www/web10/html/wcf/lib/system/io/File.class.php (41):
fopen(/home/www/web10/html/cache/cache.box-8.php) [<a
href='function.fopen'>function.fopen</a>]: failed to open
stream: Permission denied

Information:

error message: PHP warning in file
/home/www/web10/html/wcf/lib/system/io/File.class.php (41):
fopen(/home/www/web10/html/cache/cache.box-8.php) [<a
href='function.fopen'>function.fopen</a>]: failed to open
stream: Permission denied

error code: 0

file: /home/www/web10/html/wcf/lib/system/WCF.class.php (281)

php version: 5.3.3-7+squeeze13

wcf version: 1.1.9 (Tempest)

date: Sun, 02 Sep 2012 10:53:19 +0000

request: /index.php?page=Portal

referer: http://www.good-feeling-roleplay.de/index.php?page=Index

Stacktrace:

#0 [internal function]: WCF::handleError(2, 'fopen(/home/www...', '/home/www/web10...', 41, Array)
#1 /home/www/web10/html/wcf/lib/system/io/File.class.php(41): fopen('/home/www/web10...', 'wb')
#2 /home/www/web10/html/wcf/lib/system/cache/source/DiskCacheSource.class.php(59): File->__construct('/home/www/web10...')
#3 /home/www/web10/html/wcf/lib/system/cache/CacheHandler.class.php(176): DiskCacheSource->set(Array, Array)
#4 /home/www/web10/html/wcf/lib/system/cache/CacheHandler.class.php(126): CacheHandler->rebuild(Array)
#5 /home/www/web10/html/lib/system/portalbox/cachebuilder/DefaultCacheBuilder.class.php(28): CacheHandler->get('box-8')
#6 /home/www/web10/html/lib/data/boxes/PortalBox.class.php(117): DefaultCacheBuilder->execute('8', 'CacheBuilderNew...', 'type2', '0', '0')
#7 /home/www/web10/html/lib/system/portalbox/PortalBoxFactory.class.php(102): PortalBox->initialize()
#8 /home/www/web10/html/lib/system/portalbox/PortalBoxFactory.class.php(44): PortalBoxFactory->initializeBoxes(false)
#9 /home/www/web10/html/lib/page/PortalPage.class.php(120): PortalBoxFactory->__construct(true, false, true, true, true)
#10 /home/www/web10/html/lib/page/PortalPage.class.php(105): PortalPage::getPortalBoxes()
#11 /home/www/web10/html/wcf/lib/page/AbstractPage.class.php(90): PortalPage->readData()
#12 /home/www/web10/html/lib/page/PortalPage.class.php(147): AbstractPage->show()
#13 /home/www/web10/html/wcf/lib/page/AbstractPage.class.php(46): PortalPage->show()
#14 /home/www/web10/html/wcf/lib/util/RequestHandler.class.php(64): AbstractPage->__construct()
#15 /home/www/web10/html/wcf/lib/util/RequestHandler.class.php(92): RequestHandler->__construct('Portal', Array, 'page')
#16 /home/www/web10/html/index.php(8): RequestHandler::handle(Array)
#17 {main}