BIDSHelper is an excellent utility helping to facilitate the maintenance of SSAS databases w/in the Business Intelligence Development Studio and fills the gap in many situations where the BIDS environment is lacking. View an overview of the BIDSHelper features on CodePlex here.
HTH - Wil
When setting up Reporting Services for SQL Server 2005 I ran into this error. The resolution was ultimately found in the thread described below - HTH.
http://www.developmentnow.com/g/115_2006_4_0_0_732993/Database-versipn-C-0-8-40-does-not-match.htm