Rx maps. Was able to load flawlessly in March and have tried to load more maps the last 3 days with no luck. Tried different usb drives , from 2gb to 16 gb, same result. It sees the thumb drive and allows me to load files onto the thumb drive but does not see the rx maps. I have sent files to Raven and they got them to load on their Envizios. I have tried both usb ports with same results. It still has the .shp files that I loaded in March but that is it. Anyone out there know anything about these? I sure seems like a software issue, but I am stumped.