I've looked for another topic highlighting my problem but not found one.
Dell desktop running XPSP3 and Norton Internet Security 21.1.0.18.
I upgraded to Firefox 26.0 not realising the Live Update wasn't fully up to date. Since then I've not been able to access the Norton Toolbar or Norton Identity Safe.
Whatever I do "Add-ons" reports Toolbar 2014.6.1.2 is incompatible with Firefox 26.0. Current version of the toolbar is 2014.6.2.3 but Live Update won't install it.
In desparation after trying everything I completely uninstalled NIS using the Removal Tool, uninstalled Firefox using Nero, reinstalled NIS - and went through about half-a-dozen Live Updates including computer restarts until NIS reported it was fully up-to-date.
I then reinstalled Firefox yet the probelm still persists. Exactly the same error message.
Norton Toolbar and Identity Safe are working perfectly in both IE8 and Chrome - so, any ideas please on how to get them working in Firefox 26 considering I've already reinstalled both programs?