I have the following error
The database 'Test' cannot be opened because it is version 661. This server supports versions 655 and earlier. A downgrade path is not supported.
Usually this kind of error occurs when the database was made with SQL Server 2008 R2 and is opened with for example SQL Server 2008 SP2, but the problem is that I'm trying to open it exactly in SQL Server 2008 R2 which supports version 661. So what's the problem?