I decided to risk poking the 'later version available' button despite having read on the Nikon site that NX 1.3 needed mac OS10.4. So I am now running 1.3.0 (SPM version whatever that means) on 10.3.9. Although the interface at first looks identical, prog is 3x the size and presumably a large amount of re-write. Homework to be done on implication of using 'picture control' or 'non-picture control'. There also seem to be locks on some control point sliders. Off to Nikon advanced search!

Anyway in case anyone else is thinking no point in moving on from 1.2, there is, in that one might as well get used to the latest rather than invoking a partial re-learn.