Hi. When I go to Preferences -> Search -> Default Search Engine, the field is completely blank, there are no search engines whatsoever. Even the Search Shortcuts doesn't list any search engines, (only Bookmarks, Tabs and History). Even the "Find more search engines" tab which takes me to the Firefox Browser Add-Ons is no help, because I can't find any search engines (like Google or Bing) there.

Thanks for your help.