I updated from openx 2.8.10 to Revive Adserver 3.0 but after updating, Inventory page is not loading..may be update wizard not properly completed, please suggest what to do?

Mistakenly, I updated on the current database, and if i run the installation again.. then it shows "database is updated" and directly move to the inventory page, which is blank. Can i run the installation again through upgrade wizard?

Any suggestions, thanks in advance.