I've been helping out a small community braodcasting station and they are using raduga 3.8.7. As we had computer problems we have changed computers, I've loaded cbsetup for the doggle and found two copies of Radagu. One has a U ie 'Raduga 3.8.7 U' the other is 'Raduga 3.8.7' so which one should I be using and what if any is the difference please. Currently, the software is reporting a license expired error every 30 hours or so and we have to restart the software. Can someone please explain. Thank you.