[Dx4win] 7.06 won't set split on K3

[inventor_sixty_one]

I wonder what I am doing wrong ... in either the manual 'set
frequency' tool, or by selecting a DX spot that is set for split VFO
mode, the 'split' indicator on the K3 is activated ... but does not
stay in that mode.  It just 'clicks' to split mode for a moment and
then reverts to VFO A mode.

manually going into split mode on the radio works fine.

I have tried this at both 4800 and 38400 bps speeds, to see if that
made any difference.  None.

Ideas?

Steve KZ1X/4