Youtube will not work on firefox

First I should say Youtube works with IE but not firefox.

Second I should say Youtube worked well in the past with firefox but today stop working.

I tried.

1. Restarting the computer
2. Updating firefox to the latest version.
3. Update sun Java with ( IE)
4. Update flash with firefox
5. Done virus scan with AVG and Malwarebytes

Still will not work.


None of the videos load on firefox with youtube and only way to close firefox is Ctrl+Alt+Del the firefox does not respond so have to use Ctrl+Alt+Del.

I do get some kind of script error. I believe that may be causing it.

Anyway else having problems. Did youtube change some thing that is why It is not working? What is this script error?

 

Can you post a screenshot of that script error?

 

Also, does Flash Player work generally on Firefox: http://helpx.adobe.com/flash-player.html ?

 

Saying script is busy or stopped responding

Script: https://s.ytimg.com/yts/jsbin/www-en_US-vflyIK3Gd/base.js:77

Script: https://s.ytimg.com/yts/jsbin/www-en_US-vflyIK3Gd/base.js:1

 

I get script error going to http://helpx.adobe.com/flash-player.html

Saying script is busy or stopped responding

Script: http://helpx.adobe.com/include/script/compressed.js:3353
Script: http://helpx.adobe.com/content/dam/help/en/flash-player/swfobject.js:4


The firefox is slow.

I have to use Ctrl+Alt+Del the firefox does not respond so have to use Ctrl+Alt+Del.

Firefox is not responding.

With IE it works okay that web site.

 

Browser hangs playing Flash videos - MozillaZine Knowledge Base

Disabling Protected Mode in Flash 11.3(and above) - MozillaZine Knowledge Base