LightBeam shows as open and I see the little icon in the bar of the Addon, but nothing happens

I am running Mac OS 24.0 FF 10.8.5. By clicking on the icon has no effect. The Tools menu displays 'close Lightbeam', but nothing happens.

Never mind. This add-on - it's not worth. Thanks to anyone who has put in tine trying to help.

Tags: Firefox

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