I am using Firefox 34 and shockwave player 16. Both are the most recent updates available. But shockwave player crashes as soon as I try to watch any video online. I hAve tried all the suggestions in Adobe and mozilla forums but nothing helps. Recently, I cannot even watch the video fullscreen. A window pops up saying security error #2152: media cannot be played fullscreen. Earlier this was occasional but now it is regular and every time I try the same happens. I have tried creating profile and restarting firefox. The hardware acceleration mode is unchecked and firefox is running in safe mode. Real player is also disabled. Please help.