Thanks Rounik- very kind. I'll look in to your suggestion in due course. Meanwhile, I've been updating Synthogy Grand Pianos 1 to Version 2, a long, several hour-long task, but accomplished without difficulty, except for one problem. It works in Standalone very well- big improvement on version 1- but when I open Logic 9 in my current project, the previous plug-in, Version 1 of Grand Pianos, has a cross through it, and is "no longer available". Fine, except that when I went through the i/o route, Version 2 is nowhere to be found !
I guess this should really be a new thread, and I'll happily start one, if you want me to. But I suspect the solution is very simple - I'm just too tired (too dull ?) to spot it !