Hey, I thought I would update this old topic. I have been in contact with the maker of UU3D, and told him of this problem.
I don't know if anyone tried actually contacting him 3 years ago with this, but he has 'fixed' it over the last few days.
I say 'fix' as it is more of a work around, basically un-welding hard edges, but it gives the same end result. Here are two shots, with smoothing visually intact:
Maya

UU3D

I haven't tried it on an animated model yet, but it all should be OK.
I don't know if anyone tried actually contacting him 3 years ago with this, but he has 'fixed' it over the last few days.
I say 'fix' as it is more of a work around, basically un-welding hard edges, but it gives the same end result. Here are two shots, with smoothing visually intact:
Maya

UU3D

I haven't tried it on an animated model yet, but it all should be OK.