Support suggested that I remove the "Preference" files, which I have done. No luck there.
Obviously, I have tried uninstalling/reinstalling, and have downloaded to "Light" bank several times - making sure that it is in the same folder as the other content files, and have loaded them as per normal, using the "Option" button.
If it is relavant, I use the 32 bit Cubase and HSO, with a Lexicon Omega interface which, although works with my 64 bit Windows 7 operating system, will not work with 64 bit versions of the Steinberg progs. Pity!

Can anyone help please?