[Dx4win] radio interface times out

[David Edwards]

No answers have surfaced for my CAT control problem using vspMGR, DX4WIN and Flex 5K
Many responses saying "I have the same problem if you find an answer let me know".
Using PowerSDR 2.3.5 on Windows 7. Latest vspMGR and DX4WIN 8.05. 
Serial pair COM14(PowerSDR) and COM15 (DX4WIN)
Tried lots of combinations or retry 5-20 and poll rate 500-5000 ms
Uninstalled and reinstalled vspMGR
Anybody have an idea if this a PowerSDR, Windows, vspMGR or DX4WIN issue? Trying to isolate root cause for a start.
thanks
de
WB1S