VZ Navigator acting up

The past few months, when I use VZ Navigator, the phone often gives an error message that the start point is not near a roadway, when in fact, I can be on the shoulder of a major interstate. It has lately taken to restarting the phone anywhere from 1 to 5 miles from the destination. Is there some sort of update that I missed, a software glitch, or any ideas? Being a truck driver delivering to some off the wall places, this gets to be a little frustrating. Set up for truck routing, the routing usually isn't too bad....When it calculates. Might the truck setting be the problem?

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Re: VZ Navigator acting up
Specialist - Level 1

This may be a stupid question, but the only thing that comes to mind: Is your GPS enabled? Also, have you tried clearing VZ Navigator cache and/or data? Just curious, have you tried Google Maps?