[dcharlip]

I have the same set up as you. It's my understanding that all of the files need to be on the SD card (unlike previous versions of iGuidance where just the maps were on the SD card). On my SD card I have the following:

\Storage Card\iNav iGuidance\:
Folder = Maps
Folder = ScanSoft
favorites.dat
itinerary.dat
recent.dat

\Storage Card\Program Files\iNav\iGuidance\:
Folder = Snd
iGuidanceQVGA.exe
rssoloapi.dll
combrk.dll
comsrc.dll

There is a file you are supposed to move from one folder to another but, off hand, I can't recall what it is. You can call iNavCorp. Their customer support is very helpful.

Good luck.