[newbie] 8.2 install problem

[Scott Wagner]

I tried to install 8.2 power pack last night and ran into some problems.  It gets to the part where it's supposed to install the packages and no packages seem to be available.  I get error messages like "depslist.ordered mismatch against hdlist files".   After 8.2 failed I tried to go back and reinstall 8.0.  I get "Nothing found while parsing /mnt/var/lib/urpmi/hdlist"   I have finally been able to install an old 7.2.  Feeling like I was on a roll, I tried 8.0 again and got something like "unable to open /mnt/something/something/RPM. When I logged out I saw a message something about "can't open the rpm database, if you recently upgraded".... couldn't catch the rest. Can anyone help me out?   Appreciate it, Scott W.