K_Flyer
Well-known member
I found (and a Garmin tech confirmed) that BaseCamp and the 660 do not play well together. His solution, and it has worked well for me, is to set up your routes in BaseCamp, export them to MapSource and confirm they are correct, then load to the 660 from MapSource. I have to admit that, after a few months of futzing with BaseCamp, I went back to doing all my planning in MapSource. I hear BaseCamp has been upgraded so may give it another shot after travel season is over.