Try to disable blocklisting by setting the Boolean pref extensions.blocklist.enabled to false on the about:config page.

• http://kb.mozillazine.org/about:config

Also remove the blocklist.xml file and the pluginreg.dat file in the Firefox Profile Folder.

You can use this button to go to the Firefox profile folder:

• Help > Troubleshooting Information > Profile Directory: Open Containing Folder

hello this should not have happened - mozilla recently uses the blocklist feature to notify users about the outdated flash plugin but not block it. you'd have to trigger a manual update of the blocklist and hope that this time the correct version is retrieved.

go to tools > web-developers > error console & copy the following line into the code field & hit evaluate:

Components.classes['@mozilla.org/extensions/blocklist;1'].getService(Components.interfaces.nsITimerCallback).notify(null);

sorry for the computer gibberish. afterwards restart the browser & see if you can enable the plugin in the addons manager again.

I was facing flash player error while playing angry birds. The thing you need to do just download the adobe flash player uninstaller and remove the old flash player after that install the fresh flash player from the adobe website. Restart your browser... This works for me.

marigolds, The Firefox 3.0.4 is rather old and vulnerable as it came out back on November 12, 2008.

The last version from Mozilla to work on PPC macs is Firefox 3.6.28 which was made EOL in April. http://www.mozilla.org/en-US/firefox/all-older.html