Well, I've had my first real glitch with my new 6400. After a normal shutdown yesterday and what looked to me like a normal startup this morning ALL my stored profiles were gone from the radio. Luckily I had made a backup when I upgraded to v2.4.9 so I could recover most of my setup although I lost quite a number of specialized profiles. Very unnerving! Is this maybe an issue with v2.4.9? No recent Windows 10 updates.