To start off, I'm using a Mac (Leopard). Also, I'm using a 4GB SDHC Card for everything. When I copy POI and BMP files to my North American 2GB folder, I get duplicate categories on my TomTom. At the top of the category listing, i get the name with a period before it (with no entries) and then the correct category (with no period) where it's supposed to be. Any ideas on why this is happening? The only way I can get rid of these duplicate files is to use the Home 2.1 software in Windows to delete them.