The error is:
An unhandled exception of type \'System.Data.SqlClient.SqlException\' occurred in System.Data.dll
Additional information: Incorrec
User is a built-in function in SQL Server. You need to surround the name with square brackets: [User]. This goes for all table names and other user-defined names that happen to collide with keywords, reserved words or built-in names, so I suspect you will need to write [Order] as well, since ORDER is an SQL keyword.