I emailed Robert Elsinga re the original "problem" and re replied as follows:-
You are running into an (obscure) "feature" of all GPS types: via-point
memory. A route can (generally, at least on a Quest) hold up to 250
via-points. A via point can be an explicit via-point, which you added to
the route yourself, but also an implicity via-point. These implicit ones
are internally created by Mapsource (and the Quest also) when creating a
route. Each turn becomes an implicit via... And you can have only 250 in
a route.
Now the fun starts: the Quest can only hold 2500 via's all together. And
you can load 20 route. But wait... 20 time 250 is 5000.... how does that
fit into the max 2500? Well... it doesn't. =8-}
When you get past the 2500 mark, then the real interresting stuff is
happening. The Quest may or may not truncate the route at the right
point and some part of the route may end up in some other memory area of
the Quest, corrupting some data (which may or may not be important).
So, to recapitulate:
- loading routes with more than 2500 via points (implicit or explicit)
together will "do stuff" to the quest
- the effects may (or may not) remain after deleting the routes
Best is to do a master reset (you did) and load less routes.
But how, you may ask, do you avoid it in the future? Well, you can't,
unless you load less routes (or routes with less via's). And on a
holiday trip, that might not be the way you like it... not taking a
laptop along to load routes along the way. (I do take a laptop, but
don't go on a trip on my 1100GS... need to take the wife and kids).
Best work-around:
- plan your trip
- create real waypoints for your explicit via's and name them
accordingly (trip1a, trip1b...trip1k, trip2a, you get the picture).
- load the first couple of routes to the Quest (no need for real
waypoints for those)
- after finishing a route, delete it from the Quest
- when you are out of routes in the Quest, create them on the Quest
itself from the real waypoints (trust the Quest to create the route how
you'd want it to, remeber to set the avoidances just like in Mapsource)
repeat the last steps for the rest of the trip
I know, cumbersom to say the least but it works. =
(thought I was a member at ukGSer, but I wasn't... feel free to copy
this reply onto the forum if you like)
--
Robert Elsinga =
www.elsinga.net