@Sami
The nuvi.typ file give an error -2147177984 Failed : insufficient space available
This typ is a non standard typ. After the header, there are several null bytes (0x00). In a standard typ , the data blocks begin immediately after the header. TYPViewer can store comments in this place: comments are strings but not null bytes, so TYPViewer4.5.33 crashes with this special typ.
I have made a corrected version 4.5.34 for preventing those crashes.

Le bitmap Type=0x00c SubType=0x00 est invalide.
Détails: le nombre de couleurs du bitmap est 0 (comme s'il s'agissait d'un bitmap TrueColor),
mais il est codé comme un bitmap avec palette.
TYPViewer pourra malgré tout l'enregistrer sous cette forme, mais le POI sera très certainement inutilisable.
Il vaut mieux l'enregistrer en ajoutant une couleur dans la palette.
It means that those POI are not compatible with recent GPS unit: they are old POI, in an old format, but they will not make the unit crash. So, either you leave them as is, either you delete them, either you transform them with TYPViewer.

New version
Spoiler:
[Only registered and activated users can see links. ]