What I found is the following message:
I looked for more information and found the following from Mozilla (at this webpage https://support.mozilla.org/en-US/kb/ad ... =inproduct):Mint Search Enhancer could not be verified for use in Firefox and has been disabled.
I really don't want to override default settings for blocking potentially malicious Addons - so thought it best to post up here. I don't know where to report this for Mint developers. Where do I report it?What can I do if Firefox disables an installed, unsigned add-on?
If any of your installed add-ons gets disabled because it hasn't been signed, contact the add-on developer or vendor to see if they can offer an updated and signed version of that add-on. You can also ask them to get their add-on signed.
Override add-on signing (advanced users): You can override this setting by changing the xpinstall.signatures.required preference to false in the Firefox Configuration Editor (about:config page). Support is not available for any changes made with the Configuration Editor so please do this at your own risk.