Keeps recalculating route and rerouting - Tomtom ONE 130 GPS Receiver

This may or may not help you.  If you are in area where the unit cannot get a signal it will tell you recalculating or if you are in area where it's maps are not up to date it may tell you the same thing. One other possible solution, shorten the trip, on a long trip the unit will/might find several possible routes and based on your settings it is unable to select just one route so it is choosing between two at the same time and it will keep recalculating until circumstances allow it to decide on just the ONE route.  Change some of your settings in the setup screen and see if that helps or if it is a long trip, break the trip up into smaller segmants. Hope this helps