Osiris4isis, I had all three working fine before the update. After updating to Android 6.0, only IGO Primo cannot find the maps. Marshmallow renamed my external sd. When I first updated, all three showed "Map initialization error, Map files cannot be found". I went to the sys.txt file and corrected the path for the three, but only Primo (603974) cannot find the maps in the new android. If it were a problem with accessing the external sdcard, Avic would not find the maps either.