Originally Posted by Maggie-Me
Hey, last input, I had the exact same problem when I first upgraded to Win 7 (64)
Uninstall every thing you have for Calibre, make sure the Vista is upgradded to the latest updates
go back a couple versions of Calibre (they are on the site, try a month ago or something) see if it wil install, if so wait a month or so and try updating to the latest.
Well Maggie, that is a great idea for the next person who runs into this installation bug. I hope it works for them. As I said, I just need an epub reader on my laptop. So I will leave this mess for the next unlucky person who runs into it.