When upgrading the BADNUG site, I encountered the following error:
DotNetNuke Upgrade Error
The Assembly Version ( [ASSEMBLYVERSION] ) does not match the Database Version ( [DATABASEVERSION] )
ERROR: Could not connect to database.
The stored procedure ‘dbo.GetPortalAliasByPortalID’ doesn’t exist.
I found a solution that works at http://forums.asp.net/958251/ShowPost.aspx. What worked for me was changing UseDnnConfig to false. Once I made that change, the upgrade completed normally.