[Elecraft] Kx2 with wspr program

[Terry Lewis]

Hi,
I have tried but been unsuccessful with getting wspr to work with my kx2.
I'm on the right com port (4) it's the only one I can see.
Tried the k3 and k2 from the wspr settings drop down menu, set the rate to the same as radio 4800. 
Has anyone got their kx2 working and if so could you let me know what kind of settings or what to sort, I have used it with my ts590s no problem but the kx2 just doesn't want to run.
I have Realtek sound card, win7, using the usb cable that was supplied with the radio.

Thanks for your help,
Regards,
Terry. MW0ZUS