Unfortunately UVMapper classic doesn't run on Lion... far as I know at least... which is what I've now got running... as that's what came with the new imac I am now, otherwise, lucky enough to have.

Apple killed off Rosetta after Snow Leopard... needed to run PowerPC apps. So a Wine Bottler or Crossover solution to run the Windows version looks like being the lightest weight option...

It would be great to see support for UVMapper / UVMapper Pro under the latest Intel OS X versions... but that doesn't look too likely to me, at present?