I'm not the expert here, but I think it is your version of the Nav program of PolNav. Usually the maps are OK. Did you try a PolNav a few posts ago?
viewtopic.php?p=465585#465585
I have the 2008Q2 maps for North America. Do you need them?
viewtopic.php?p=465585#465585
I have the 2008Q2 maps for North America. Do you need them?