The Manhattan is another of the TYT Clone players (scan SC2000, Logix 3000, Grundig 130, Divido to name a few)
The problem you are having is down to the firmware on your player and there is a remedy to it. It involves updating your Firmware. The procedure for this is far to long (but very easy) to go in to here.
For more information come to the user group at
http://groups.yahoo.com/group/Scan2000