Hi, I have an application which I develop using VS.Net 2005 and SqlCe Compact 2005 and now I am using VS.Net 2008 professional so when I open the applicalition in VS 2008 it converted to VS 2008 platform together with the Sqlce db but I can't connect to the db I get this error message (The databasefile has been created by an earlir version of Sql Server Compact please upgrade using SqlCe Engine.Upgrade() Method) and I can't figure how to go about it so I would be pleased if anyone could help. Thanx