When I first asked this question I had a seven year old PowerPC Mac. Then just over a week ago the display failed and on enquiry it was quickly obvious that it wasn’t worth repairing it.
So I now have a new Intel Mac running OSX 10.8.1 Mountain Lion.
The good news is that Hexagon is fine and I can now open my old files as well!
As long as you use the latest free version of Hexagon I’ve not had any problems although I haven’t had much chance to use it yet.
Any earlier versions of Hexagon will not work as they need Rosetta which is no longer supported.
Daz Studio 3 also won’t work so I’ve downloaded Daz Sudio 4.5 and now I can’t open my old Studio 3 files!
So one problem solved and one new one.
I’ll head over to another Forum and see if anyone can advise.