I am up and running now.
I'd downloaded the 1.4.6 stable version to use at work on my W7 Starter netbook but turns out the profiles from OneBookShelf who I think will be doing the publishing, were for 1.5.2, which is what I've now got on my W10 PC at home. Plus I went to Control Panel>Colour Management>ICC Profiles and added the US Web coated (SWOP) v2.
cheers
Les