I keep getting the error message "gpx/temp.gpx" when trying to transfer from basecamp to my nuivi 2555. I used the trip planner. On one of the other pages it was suggested to make sure my gps device was on "mass storage" that's been done. I have never put a memory card in the gps yet could that be a problem? but my device says that I have 2 GB free. any suggestions?:confused: