hello IvensGoes, probably this is a problem in connection with the recent update of adobe's flash plugin, please refer to the following article for other common solutions: Flash 11.3 doesn't load video in Firefox

The solution is: install a previous version of Flash (e.g. 11.2)

I made the mistake of upgrading Firefox. Now its absolutely worthless to me as a browser and I cannot even use it any longer. Really seriously pisses me off, been using it for years. I upgraded Firefox and now I cannot watch any videos whatsoever on Firefox. Firefox sucks. I came here looking for answers and found NONE. Great job Firefox! You suck. And I already tried reinstalling everything, getting new flash software, shockwave, yada, yada. Firefrox doesn't work and now I have to just accept the fact that I have to use another browser and dump firefox. Great job Firefox! Not. Now this is all I see when trying to watch videos in firefox. Why is it there aren't any answers or solutions here at Firefox.com for this widespread problem?

And solutions like the one above are worthless. Why, when posting solutions, do people not tell you where to find and install an earlier version of Flash software? Like I am gunna spend the next 5 hours searching the net trying to find out where and how. Would have only taken 30 more seconds to provide real solutions. Whatever. Firefox sucks. They don't even provide answers on why thousands and thousands of peoples firefox browsers stopped working with THEIR last upgrade.

I want my donation back. Seriously, I do. Firefox sucks. If anyone discovers a real solution to this problem, then please email me at phillipjayhan at yahoo.com. Until then I am going back to browsers I hate and despise and am saying goodbye to Firefox...

Seriously disappointed, and even more disappointed at Firefox for not providing ANY solutions to THEIR problem which came when I upgraded THEIR software. I need to be able to watch videos. Bye bye firefox, .

Try this: <This might not be a FlashPlayer issue. It's a possible RealPlayer Plugin issue> Follow these steps if you get this message on Youtube "an error has occured-please try again later": 1) Disable all RealPlayer Plugins or Extensions on FireFox then close Firefox. 2) Launch RealPlayer and click on the RealPlayer icon at the top left. 3) Click Preferences 4) In the Category panel click Download and Recording. 5) Uncheck (remove check mark) from Web Download and Recording and click OK. 6) Start Firefox and try to play the Youtube videos. NOTE: By disabling this you will not be able to download the Youtube video to your computer since the download uses the Realplayer Web download. You can use free software (FREE YOUTUBE DOWNLOAD) by DVDVideoSoft Free Studio at "www.dvdvideosoft.com" to download a Youtube video to your computer if desired. The video will be downloaded into your Video Libraries folder.

This worked for me. I hope it works for you !

I tryed UNINSTALLING Real Player and it didn't work. The only solution I got is at my Blog: http://ivensgoes.blogspot.com.br/2012/07/firefox-problemas-de-video-flash.html (Portuguese and English). I am still waiting for any Falsh update that does not occur in a crash in the video and audio pages I visit in Internet, including my own Blogs.

cliptvbr.blogspot.com ivensgoes.blogspot.com

But thank you for your suggestion.

Obs.: I still have RealPlayer plugin installed.