Running HERE Drive+ on Lumia 521. App opens ok but when I hit "Start" on the navigation, the app crashes and closes. Have deleted the app and maps and redownloaded both but still crashes. Any help would be appreciated.
That sd card should be more than capable of handling the bandwidth needed to process the mapping images. Did you try loading the sd card on your computer to see if it works that way like I had suggested in your other thread? It seems like there is a problem with the card. Have you tried installing the maps to the phone to see how it works? If you don't get the same problems I would make the assumption the sd card needs replaced given your other issues.