Update: problem solved after I "Refresh Firefox" to reset add-ons and settings. --------------------------- Thanks a lot for providing this addOn! It would be very very useful but I am somehow not able to use this add on. After I enabled the key shortcuts from firefox's extension setting page, and clicked 'save settings', the settings don't seem to be properly saved --- if I refresh the setting page, the settings are reset to disabled. And it does not work when I try it with Google search. Any ideas?
