I have lost the ability to resync my usb stick back to my main collection; upon connecting usb stick back to pc after making changes to hot cues and loops on the players, the resync button is greyed out, so no way to sync the changes back to main collection. I have also installed Engine Prime 1.2 on a new pc and got a new usb stick, all new setup, still the same… do I have a hardware problem? I have contacted Denon, given full details and a video of the problem, they are sorry to see I have the problem and will get back to me… nothing in nearly 5 weeks. All was fine before 1.2 update. All firmware up to date, tried everything I can think of. Frustrated!! Any advice much appreciated.