Quote:

I think I read somewhere that if you install the CIVA INS then the default doppler navigation becomes non operational. I've tried researching this but haven't found any answers. Is this true? If so, to fix it, do I just switch panel.cfg's when I want to use  DN or INS?

Sorry, but that's not true at all.

I have the CIVA INS installed, I use the civa_panel.cfg renamed as panel.cfg (with minor modifications) and I can use Doppler Navigation, INS Navigation or follow an FS Flight Plan.

Here is how my minor modification looks:
[Window Titles]
Window00=Simicons
Window01=Animations Control
Window02=CS Weather Radar
Window03=Map
Window04=Autopilot
Window05=Crew Messenger
Window06=GPS
Window07=INS Control Display Unit

;CIVA
[Window07]
size_mm=250,368
background_color=0,0,0
window_pos=0.0, 0.050
position=0
visible=0
ident=11041
no_luminous=1

gauge00=../civa/INS!Cdu1,           0,   0, 250, 196
gauge01=../civa/INS!Msu1,           0, 197, 250,  71
gauge02=../civa/INS!Adeu1,          0, 268, 250, 101

As you can see, SHIFT+7 brings up all three parts of the CIVA-INS units. And I have added a default FS GPS 500 (SHIFT+8)as well.


Quote:

I tried using Doppler Nav for the first time in Months after only INS / VOR navigation, but I couldn't get it to work... So my guess is I'm either really dumb (which is possible  ;D ;D :D) or that I read correctly, and it doesn't work with INS installed.

‘707 Captain’ FLIGHT MANUAL Part II – Aircraft and Systems (cs707_manual2.pdf) page 22 - L17. DOPPLER-INS SWITCH
My guess is you did not switch the DOPPLER-INS SWITCH from DOPPLER to INS. ;)

Mark