Turned on my imac this morning and the Firefox browser gave a "Error code: SEC_ERROR_BAD_SIGNATURE" for every page I tried to open. I have reinstalled the browser and that one is working properly. However, when I try to add Dashlane to it, the old browser opens and the same error message is displayed making it impossible to use Dashlane on the newer version of the browser. How can I get rid of the version that opens up when I try to install Dashlane on the working browser?