Cant access wp control panel

I attempted to upgrade to 3.0.4 and logged out now when i go to log in get message “Upgrading WordPress to 3.0.4 at https://www.sitename.com
0
upgrade
Version Discrepancy
We have detected that you are running a version outside of the scope of this upgrade. We’ve updated our records with your current version. Please refresh the page to see if you have additional upgrades available.”

Have refreshed but there is no change.