Thread: Opening virtual gps com port.

Man I am totaly stumped. I have worked on this for hrs but I can't get past it.
I am trying to open a virtual port created by Xport3. I replicate port 4 (the GPS port) to 5,6,7,8. I am trying to open any of those virtual ports but when I do port.open() it says the request is not supported. If I disable xport3 and open port 4 it works. If I open a port that is non-existant I get an error saying the port doesn't exist.

Do I have to treat a Xport3 Virtual port differently and if so how?
Any ideas what I am doing wrong?

My code is c#.
Code fragment:
class GPS
{
// Create the serial port with basic settings
private SerialPort port = new SerialPort("COM7", 4800, Parity.None, 8, StopBits.One);
private CultureInfo NmeaCultureInfo = new CultureInfo("en-US");
// Used to convert knots into miles per hour
private double MPHPerKnot = Double.Parse("1.150779", new CultureInfo("en-US"));

public string mlat="", mlongitute="";
public double mspeed=0,mbearing=0;
public bool mPositionFix = false;
public DateTime mSatelliteTime;


public GPS()
{
// Attach a method to be called when there is data waiting in the port's buffer
port.DataReceived += new SerialDataReceivedEventHandler(port_DataReceived);

// Begin communications
try
{
port.Open();
}
catch (Exception e)
{
Logging.WriteToLog("Error in GPS(): " + e.Message);
MessageBox.Show("Error in GPS(): " + e.Message);
}
}