Does anyone have a lighting config that has a functioning ice light? Nothing happens when I turn this switch on...

Tom, do you mean the lighting section from the aircraft.cfg ? If so, here's mine:

 

[lights]

//Types: 1=beacon, 2=strobe, 3=navigation, 4=cockpit, 5=landing

light.0 = 1, -27.70, 5.0, 6.6, fx_beaconcarctts,

light.1 = 2, -10.30, -18.9, 3.1, fx_strobecarctts,

light.2 = 2, -10.65, 18.9, 3.1, fx_strobecarctts,

light.3 = 4, -6.00, 0.0, 1.0, fx_vclightcarctts,

light.4 = 10, -9.50, 0.0, 1.0, fx_vclightcarctts2,

 

My ice light works fine, by the way, but I can see no reference to it in the above.

Service Pack 20120124 from Carenado contains the following change note:

"The anti ice light can’t be switched on/off by using the switch in the cockpit. Fixed"

Thanks guys!