02-23-2013 01:07 PM
Please refer to this Knowledge Base and see if that help :
KB31953 : When attempting to stream video in the BlackBerry Broswer users receive an error message "An error has occurred attempting to play media ".
02-23-2013 01:30 PM
If that does not help then this Knowledge Base Might be helpful :
KB20491 : Unable to view YouTube video files on an Unlocked BlackBerry smartphone
So in that situation you have to call your Carrier .