Hi Michael;
Control copied 30 shapes onto drawing and then did "undo" (control z) back to zero objects;ALL GOOD.
I think the "redo" button missed me before and was trying to 'redo' by pressing control+shift+z
then thinking 'nothing happening'. So....re-assigned "re-do" in options/shortcuts from control Y
to what i'm used to: (control + shift +z).

All perfect now cheers!

PS. Custom UI now installed. Found the instructions required bit of concentration / trial and error.
Lighting options not working but im fine with that till another day....