So far so good... the only problem I had was that there was a saved route from the last time I used the software. The new version went straight into the configuration, and it would blank out the screen after a couple of seconds and try to recalculate the route, and not allow me to finish the setup. I just restarted the app and clicked "OK" in the configuration, cleared the route and went back into the settings to check everything out.
I can't seem to disable the "speed camera" option, and setting the GPS to advanced/sirf keeps getting reset. Not sure if it's a problem with the receiver itself or what... I'm using the MS/Pharos USB unit that shipped with MS Streets 2k5 over USB (seen by XP as "COM8").
I have a question about the SAPI plugin though... I have VR/TTS at home via AT&T Natural Voices -- best damn sounding voices in the whole world IMO

-- is it possible to use these voices with D3 instead by enabling this plugin?
I'll test the app fully tonight on the way home and see what if I can find any bugs.