wbb problem

Fatal error: PHP notice in file 
/home/www/cwcity/hosting/p/e/perfect-rl/htdocs/wcf/lib/system/event/listener/UserPageIMLinkListener.class.php
 (20): Undefined property: UserPage::$frame




			Information:

				error message: PHP notice in file 
/home/www/cwcity/hosting/p/e/perfect-rl/htdocs/wcf/lib/system/event/listener/UserPageIMLinkListener.class.php
 (20): Undefined property: UserPage::$frame


				error code: 0

								file: 
/home/www/cwcity/hosting/p/e/perfect-rl/htdocs/wcf/lib/system/WCF.class.php
 (255)


				php version: 5.2.10


				wcf version: 1.0.11 pl 3 (Horizon)


				date: Tue, 16 Mar 2010 19:33:39 +0000


				request: /index.php?page=User&userID=2


				referer: http://perfect-rl.cwsurf.de/index.php?page=Index


			

			Stacktrace:
			#0 /home/www/cwcity/hosting/p/e/perfect-rl/htdocs/wcf/lib/system/event/listener/UserPageIMLinkListener.class.php(20): WCF::handleError(8, 'Undefined prope...', '/home/www/cwcit...', 20, Array)
#1 /home/www/cwcity/hosting/p/e/perfect-rl/htdocs/wcf/lib/system/event/EventHandler.class.php(193): UserPageIMLinkListener->execute(Object(UserPage), 'UserPage', 'assignVariables')
#2 /home/www/cwcity/hosting/p/e/perfect-rl/htdocs/wcf/lib/page/AbstractPage.class.php(63): EventHandler::fireAction(Object(UserPage), 'assignVariables')
#3 /home/www/cwcity/hosting/p/e/perfect-rl/htdocs/wcf/lib/page/UserPage.class.php(105): AbstractPage->assignVariables()
#4 /home/www/cwcity/hosting/p/e/perfect-rl/htdocs/wcf/lib/page/AbstractPage.class.php(77): UserPage->assignVariables()
#5 /home/www/cwcity/hosting/p/e/perfect-rl/htdocs/wcf/lib/page/UserPage.class.php(170): AbstractPage->show()
#6 /home/www/cwcity/hosting/p/e/perfect-rl/htdocs/wcf/lib/page/AbstractPage.class.php(36): UserPage->show()
#7 /home/www/cwcity/hosting/p/e/perfect-rl/htdocs/wcf/lib/page/UserPage.class.php(37): AbstractPage->__construct()
#8 /home/www/cwcity/hosting/p/e/perfect-rl/htdocs/wcf/lib/util/RequestHandler.class.php(63): UserPage->__construct()
#9 /home/www/cwcity/hosting/p/e/perfect-rl/htdocs/wcf/lib/util/RequestHandler.class.php(91): RequestHandler->__construct('User', Array, 'page')
#10 /home/www/cwcity/hosting/p/e/perfect-rl/htdocs/index.php(8): RequestHandler::handle(Array)
#11 {main}