It may be possible to reinstall the add on, however I think you have to remove it from the Control Panel.

Your System Details shows;

Installed Plug-ins

Adobe Shockwave for Director Netscape plug-in, version 12.1.4.154

What makes you think it is listed as unknown?

Grab the uninstaller from here: Uninstall Flash Player | Windows Uninstall Flash Player | Mac Then reinstall the latest version.

Flash Player v15.0.0. 239 http://get.adobe.com/flashplayer/ Shockwave Director v12.1.4.154 http://get.adobe.com/shockwave/

I am using WIN XP PRO SP 3.0 21 bit on a desktop When I ask if my plug ins are up to date, the list shows 'RESEARCH' Now I have just in the last 5 days been updating all the Adobe programmes, as I was having a problem uploading pics/photos on Firefox. Now this all started after I updated Firefox about 10 days ago.... I am sick & tired of uninstalling & re-installing these programmes.... I have at last been able to upload a pic on my Status on Facebook, but still cannot upload a pic in a message, nor can I on a forum.....or change my profile pic, for that matter..... I have been told I must/need to update all the plugins, isn't there a way to do this without uninstalling them all first? Please can someone help me, this is the 3rd forum I have posted this question to....it is sooo frustrating.... Peace & Love folks Sylvia

UPDATE...I was able to upload a Birthday pic on a friend's Status earlier today, now I cannot do that either, I just tried once again. Also, on Facebook, I am experiencing some weird things, like other people pics not showing, (coming & going) and Emoticons sometimes partially missing....so weird.Help!! Sorry if I'm not explaining myself properly....

@SlimSylv you can set the plugins to automatically update from the Settings in the Gear menu on about:addons

However yes, sometimes it is required to uninstall the old one to install a new one. If the above information does not resolve your issue, please consider creating a new thread containing the specific details of your issue.

Doing so will allow the Mozilla volunteers to give you solutions that are more helpful to you. This may help them to solve your problem faster and more efficiently.

Please, feel free to post the link to your thread on this thread for volunteers interested in assisting you.

Thank you.