I am not sure I can get this working again. Owing to loss of some of the functional pages, this would require a re-write, something I don't have the time nor inclination to do. I have looked everywhere on my computer and storage server for recent copies to no avail. At best I may be able to get an older version working (from 2015), at worst, this is the end. I will perservere with trying to get the older version back (which lacks several colour groups). But no guarantees.
The colour group pages are back, however, so there is that small consolation.