This support board is the best I have come across. Very good to know that problems can be sorted out quickly.
The answer was download & use the beta version. If I do this will the current trees I am working on be available. Does everything automatically transfer to the beta version?
NB I had previously been using the free version for a few months.
Your tree will be safe
GenoPro Beta opens the .gno files without any problem. In any case backup your tree in case you will want to go back to the official version (1.99) because the Beta version changes the file structure of the tree to meet all the changes.