Internet Explorer uses a different version of Flash that Firefox does. You need to install and update them both separately.

In your control panel, uninstall Flash 11. Then, install https://get.adobe.com/flashplayer/download/?installer=FP_16_for_Firefox_-_NPAPI&standalone=1

Hello kskelley you have installed both versions, Shockwave Flash 11.6 r602 and Shockwave Flash 16.0 r0, uninstall the older 11.6.602.180, keep only the latest 16.0.0.296 !

thank you

Thanks very much to both of you for getting back to me so quickly. I should have mentioned that in the Windows Control Panel it only shows version 16, not version 11. When I installed v16 yesterday I ran the tool from Adobe that is supposed to remove old versions, and got a message that an older version had been removed. For some reason, Firefox is still seeing two versions.

You can uninstall current Flash player version(s) and (re)install the latest Flash version.

See this about uninstalling Flash players:

• http://helpx.adobe.com/flash-player/kb/uninstall-flash-player-windows.html

Note that this will remove all installed Flash players.

You can find the latest Flash player versions for Firefox on this page:

• http://www.adobe.com/special/products/flashplayer/fp_distribution3.html

Thanks to cor-el for providing a link to the uninstaller that actually found the old plug-in that was lurking on my system. Once that was gone (I had to delete it manually) I was able to re-install. Thanks also to Tyler Downer for pointing out that Firefox uses a different version of Shockwave than IE, and providing the link to download it.