Made a list, included 20 or so waypoints. Arranged them in a route.
*Last night*, I was able to calculate a route, load it to my device, and use it today.
I had two waypoint changes that I noticed in the "real world".
Adding those two waypoints tonight, I attempted to recalculate the route. No errors, but it won't calculate. The list of 20 waypoints appears in the route, in the correct order, but all with the same start time, and no time calculated to complete any segment (all zero). That's sort of the behavior you might see if "Direct" was checked as routing option, versus "Driving" or "Motorcycle", but I do indeed have "driving" selected.
My Nuvi 2595 is plugged into my Mac running BaseCamp 4.2.4, and my MAC recognizes that it's there.
My MAC does NOT have it's own detailed maps; but the good results I got last night just had my Nuvi plugged in, using its maps.
I'm trying to make handouts for a rally we're hosting on Saturday. I had just what I needed last night; now, I can't recreate a slightly modified route map and list of directions.
Is there a setting I've missed somewhere? The route displays on the map all right, just with straight lines between all the waypoints.