Clicked on "refresh tor" and lost my homepage and log-in. still have utilities but browser is now Firefox. I clicked on Utilities, then Help (?), then troubleshooting information, On this page you can choose either " refresh tor" or "start in safe mode". After refreshing, Tor home page was gone , now Firefox. also shortcuts. Still have utility but boot can't find proxy server. Can I get my Tor back?
The Tor Browser Bundle is based on Firefox. The option you clicked is a Firefox feature that removes all of your add-ons and customizations, and resets everything to the default settings.
Since you can't download the TorButton and the TorLauncher add-ons, you'll have to download a fresh copy of TBB. Your homepage and shortcuts should be stored in a profile backup, which is usually saved to the Desktop. I'm not sure where TBB would save this, but I'm guessing it would be inside it's own folder somewhere.
Edit: I just tested it and confirmed that using Firefox Reset (or Refresh Tor as it's named here) will break the Tor browser, and you have to re-download the browser. Your bookmarks and other profile data is stored in the Tor Browser folder under Browser/Desktop/Old Firefox Data/profile.default.