The same thing happens to my converted 3760>3490 for a long time now.
Long second and third Routes are calulated very slowly.
With a very long Route, it calculates up to 99% , then displays the message you got and after that it displays more than half of the Route.
As I start driving this long Route, new instuctions are going to be added to my existing "half Route".
This is normal and depends on the device memory.
There is no real problem with that.
As I can remember, we've discussed this "problem" again a long time ago...
For those who want to test their devices, try a Route from Ankara (Turkey) to Seville (Spain), only 4,392 Km long (in Mapsource)!
Bookmarks