I ran into an error today involving connecting to a Microsoft Access database. I avoid Access like the plague. In this case, the program involves converting data in an Access database to a next generation system with a SQL Server database. Therefore, using Access is unavoidable.I wired up my connections and got the appropriate connection strings using the old UDL trick. The connections tested successfully. However, the program would throw an InvalidOperationException when I tried to connect. The ......