Recently I had a server crash that was serving on of my DotNetNuke portals.  The portal was running DotNetNuke 4.7 and all was fine prior to the server crash.  The server crashed do to a hard drive failure, and my provider HostWay (be warned) did not keep proper backups of the server as thier hosting agreement said they would.  So after recovering the site, everything runs fine for viewing, but editing is having problems.  The inline editor works fine, but the edit pages seem to fail on postback.  I can click to edit an html/text article, for example, and I go to the editing page and am able to make all required changes on that page, but when I click the update link, the edit page simply reloads and my edits are gone.  This is very frustrating.  Somtimes, in attempting to make edits, I will get a "CRITICAL ERROR" message at the top of the page that tells me that postback failed because the viewstate information did not match that held by the server.

I assume that I have a corrupt file somwhere in the installation that is causing this issue, but I don't know how I would find it.  I have tried to start over by creating a fresh install of 4.7, and then editing the web config to point at the DB for the corrupted installation.  But in order to make this work, I need to log into the new site to upload additional modules and skins.  When I try doing this, my login information is no longer recognized.  I have also tried moving files from the old installation to the new one, but once I get enough of the old installation in that I can log in (Can anyone explain to me which phisical file in the directory controls this?), I also see the re-emergance of the editing problem.

Can anyone give me suggestions on what I should do to get this portal fixed?

Thanks very much in advance for your help.