I got this message from my SQL server when trying to attach an mdf database file.
The database 'DNN' cannot be opened because it is version 661. This server supports version 662 and earlier. A downgrade path is not supported.
Could not open new database 'DNN_reflab'. CREATE DATABASE is aborted. (Microsoft SQL Server, Error: 948)
The server supports version 662 and older but not 661 apparently!!??