My evidence in my device Via 135:
I have installed the camper sayville map on the card.
I have installed the Europe sayville map on the card.
Standard patch, start the device with reset, the camper map is blocked when selecting the street.
Standard patch, start the device with reset, the Europe map is not blocked when selecting the street.
From the Europe map I switch to the camper map and now it works fine.
Truck patch, start the device with reset, the camper map is blocked when selecting the street.
Truck patch, start the device with reset, the Europe map does not crash when selecting the street.
From the Europe map I switch to the camper map and now it works fine. The camper map works fine if I start the device with another non-truck map, from internal memory, or from SD.
Truck patch, I delete the truck files from the camper map, the map remains twin with europe but with all the pdi, start the device with reset, the camper map works well when selecting the street.
Truck patch, start the device with reset, the Europe map does not crash when selecting the street.
I paste the truck files on the sayville Europe map, this map is now twin with the camper, but without pdi files, I start the device with reset, the Europe map crashes when selecting the street.
Either way, any map with truck and standard or truck patch files is blocked when selecting the street.
It only works well if you first start the device with another map and change the map from the menu selection "change map".
The last test performed:
Maps on the card:
Europe sayville + sayville camper truck files
Europe camper sayville activated with the camper goal nav3
Europe zone 3 map in internal memory.
I start the device after reset, I select the Europe zone 3 map and switch to either of the two maps on the card and they work fine.
I start the device after reset, I select any of the maps on the card and they don't work, they crash. Remember both maps on the sd card have the files trucks.dat, trucks.met.
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The same card with sayville maps attached to a Start25 works perfectly with all patches.
The Europe Sayville map has the trucks files.
The Camper Sayville map is complete.
The only difference of the files is that I have removed the dct from the maps to create a new one in the start, the other dct was from the via and it doesn't work.