@zakon
In post #2 i told him how to relocate maps to SD card which is what he asked in first post, but that's not and never was his problem really. It's because he had 2 versions of CNNTNA on his 4 GB internal drive and that's worse than pointless because there could be conflicts if both are enabled. He already has the new CN & 3D in place, but had an old JCV file. Delete the old NA, some other junk and the old jcv, replace it with the current jcv for NA and he's set.
Whether he puts the new jcv and other maps on the unit or on his 8GB SD is now immaterial 'coz he's got the space in both.