That copy of DataBridge is no longer active. Please download the latest release build and you shouldn't have any issues. Are you creating a MySQL recordset or a MySQLi recordset? It will probably only show connections corresponding to the type of recordset you are creating. So if you define a MySQLi connection from the standard MySQL recordset dialog, it still won't be an available option for use with that recordset.
If you continue to have problems I'll need to do screen sharing to see the problem and diagnose it, but it sounds like you may just be creating the wrong type of connection for the recordset you are using.