I had problem earlier about previous version so i had to do some search in
order to fix it and finally found KB937862 which fix the problem with
previous version. I had the local area connection disabled since i'm using
dial-up but i also have Windows Live Onecare installed and previous version
works just fine. Since canceling my Windows Live Onecare subscription the
previous version did not work. i had to enable local area connection for
previous versions to work. It's weird that Windows live Onecare can fix this
issue but Vista sp1 does not.
Article ID : 937862
Last Review : June 22, 2007
Revision : 1.0
"Folder versions" list is blank, or you receive a message on Windows Vista:
"There are no previous versions available"
http://support.microsoft.com/kb/937862/en-us