@GrahamI'm not sure what versions of Firefox and/or NoScript you have .... BUT you really should click on the <Help>drop-down of Firefox and click on "Check for updates".
There has been a bucket-load of
critical fixes in the past couple of months.
Along with the vital stuff, the old "Extensions" gizmo has been renamed as "Add-ins" and is now automated, so updates are notified each time you open FF - great for keeping you up to date.
@NoopsyI'm at a bit of a loss ... if you're clicking on the right bits of images, it should work
Can you see the image below