I've configured the harmony 600 with solo2 two weeks ago, all was ok, only the shoutdown menù can give you little lose of time. Don't remember now the serial, but the box was PVR, vu+.
If you need, I can tomorrow take a look in the harmony software and tell you with precision.
Thanks a mill kaktus, my harmony interface is a wee bit different from the screen shots, but thanks to your advice I just realized it was just the name solo2 I had to enter and not the model number, which I had been entering.