Could you do a little housekeeping of your extensions, in case they are causing issues. Disable ALL nonessential and/or unrecognized extensions on the following tab. If in doubt, disable:

orange Firefox button (or Tools menu) > Add-ons > Extensions category

Then restart Firefox using one of the links on the page.

This is some standard guidance that addresses the most common issues with the Flash player:

(0) Keep up-to-date any add-ons (such as video downloaders) that interact with the Flash player

(1) Disable hardware graphics acceleration in Firefox and in Flash

(A) In Firefox, un-check the box here and restart:

orange Firefox button (or Tools menu) > Options > Advanced > General > "Use hardware acceleration when available"

(B) In Flash, see this support article from Adobe: http://helpx.adobe.com/flash-player/kb/video-playback-issues.html#main_Solve_video_playback_issues

(2) Disable protected mode (Win Vista / 7 / 8)

See this support article from Adobe under the heading "Last Resort": Adobe Forums: How do I troubleshoot Flash Player's protected mode for Firefox?

Does that help?

The problem You have encounter has affected lots of people I mean Shockwave flash . The precise and accurate solutions are given in the video tutorial that shall resolve your

problem amicably.

link deleted as spam - unrelated to the website being discussed in this thread

Best of luck