After attaching a new database and trying to login, a user may receive the following error: "Error: Unable to establish database connection. Error number: -2147211486 Error Description:General ODBC Error: Cannot open database 'DB' requested by the login. The login failed. Native error 4060"
This may occur if the backup was taken from a more recent version of RE than the version that you are attaching the database to. Please update to the latest patch and then try to re-attach the database. Then, run the program as administrator and login with the Supervisor credentials