look in the folder /Setup/applications/mojoportal-core/SchemaUpgradeScripts/mssql/
Do the files exist 2.3.8.6.config, 2.3.8.7.config, 2.3.8.8.config, 2.3.8.9.config?
If they do exist, make sure the user that is the identity on the application pool has read permission on those files.
Then visit /Setup/Default.aspx again