If with NT map you will still have the same problem with route calculation, then do this:
- Create complet backup of your device
- format your device with prepusb
- add back files from backup and let as know if now work.
6th September 2015, 07:30 PM
victor777
StefanSchm :
"I updated my garmin 765T unit. New firmware (v4.50), new Maps (For example Garmin City Navigator Europa NTU Unl*** for 2013, 2014, 2015, 2016 as gmapsupp.img)..."
The maps for 765 are NT, not NTU.
765 is very old devise, defragment it ( make backup of internal memory, format it ( FAT32 ) and restore).
Remember that the presence of a large number of unused POI may cause undesired operation.