600 * Operation suspended. An internal error occurred. Restart your computer to ensure that all recent configuration changes take effect. 601 Invalid port handle detected. An internal error occurred. Restart your computer to ensure that all recent configuration changes take effect. 602 The specified port is already open. The network connection is attempting to use a COM port that is currently being used by another active network connection or another process (such as a telephone line monitoring program like a fax application). Exit the program or process that is blocking...