I try to save all downloaded installer files in case I need them later.
If you didn't save the previous installer and you just recently uninstalled the old, then reinstalled the new version, IF you're using Windows XP, you might be able to use System Restore to go back to the previous version but there are no guarantees.
Hope this helps.
I think others have this problem. After Google Earth recently upgraded, I have not been able to connect. I read and follow their on screen suggestions, but they have not helped. I have even fully disabled Norton and AOL scanner but this does not help. Is there a cure, or any way I can go back to the previous version which worked so well? THANX! MIKE