Hi,
The K3D Lightwave object viewer is no longer a commercial offering and is now free and has been released into open source. The latest version of the viewer (including the full source code if required) can be downloaded here:
http://www.kevs3d.co.uk
There is a forum available on the website for discussing K3D open source development.
The newest version features significant performance improvements when loading sub-patched objects.
I hope this is useful to people.
Thanks!
Kev