Hello Mark,
Are you referring to our AVG Web tuneup plugin?
Does it say that is installed on Firefox browser but on the AVG zen interface it says as it is not installed?
AVG tuneup says that i need to install a plugin but i have already hav installed it. I have tryed to reseat my plugins but no luck and tryed uninstalling it and reinstalling it but no luck.
Thank you for the confirmation.
This is the known issue and it is a bug with the Zen interface and also the certification issue with Firefox.
Our developers are working on this and will fix it in the next update.
Until then if you wish to use our AVG web tuneup add-on we request you to change your default browser to Google Chrome and install it.