Version 4.0 of UVMapper Professional is coming, most likely next week.  I believe I have everything ready to go, but I'm going to be out of town for a few days and I want to wait to launch the new version until I'm back in case there are any issues.  Lots of new features like LSCM mapping, magic wand for selecting vertices, facets, edges and seams (it's really easy to split up the texture map into pieces now), plus lots of other tools.  I'm looking forward to hearing what people think of it!