[Dx4win] PSK31 + DX4WIN + Elecraft K3 NO JOY!!!!!

[John Scott]

I am frustrated because I can't make the above combination work.  DX4WIN 
decodes PSK31 tones as one would expect, but it will NOT transmit.

Briefly my settings are:  DX4WIN: Radio Elecraft K3 X4 38400 baud on COM 1
                                   CW WINKEY on COM 7 DTR nil RTS PTT 
Control
                                   (all above set in Preferences)
                           PSK31 window: TX PTT CONTROL using RTS

                           K3 MENU MIC SEL: PF.H
                                   MIC + LIN: ON
                              CONFIG LIN OUT: 010
                                     PTT-KEY: RTS-OFF

What really puzzles me is that I have three other programs on this 
machine that do PSK31 with these setups and they ALL work very well.

What am I doing wrong with DX4WIN???

BTW: Running INTEL 3.6 GHz Windoze XP SP3 DX4WIN 8.05 default on board 
sound card (REALTEK)

Thanks