Recent crashes of certain multimedia contents (this includes Youtube videos, certain flash games and other applications) in conjunction with Firefox are most probably caused by a recent Flash update and/or a malfunctioning browser plugin such as Real Player.

In order to remedy the problem, please perform the steps mentioned in these Knowledge Base articles:

• Flash Plugin - Keep it up to date and troubleshoot problems

• Adobe Flash plugin has crashed - Prevent it from happening again

• Flash 11.3 doesn't load video in Firefox

Other, more technical information about these issues can be found under these Links:

• http://forums.adobe.com/thread/1018071?tstart=0

• http://blogs.adobe.com/asset/2012/06/inside-flash-player-protected-mode-for-firefox.html

Please tell us if this helped!

can you see if this occurs in safemode.

• Diagnose Firefox issues using Troubleshoot Mode

and try to clear cache and cookies?

• Clear cookies and site data in Firefox

AND

• How to clear the Firefox cache

Did not fix problem

I cleared cache & cookies via the "clear history" I cleared firefox cache via options/advance/network I restarted firefox in "safemode"

have you tried disabling or testing protected mode.

• kb.mozillazine.org/Flash#Troubleshooting
• http://forums.adobe.com/thread/1018071

Even though firefox indicated that the shockwave flash plug-in was up to date and the the flash programs were installed on 07/20/2013, I uninstalled flash player, flash plug-in, & flash plug-in activeX (using control panel's uninstall program feature).

I downloaded a new copy of shockwave player from Adobe's website and installed it.

The first time I tried to play the "Crosswords" game on shockwave.com website, firefox asked to "get the player" - which I did.

I played Crosswords several times and the problem hasn't reoccurred.

I received an e-mail message from "Tylerdowner" suggesting that I update plug-in. I'm going to reply to "Tylerdowner" problem solved.