Thanks to Jody, Tyson and (especially) ted_b for their responses to my earlier post on this subject, but unfortunately Ted_b closed that topic too soon, so I've had to re-post here...
My primary issue is not obtaining the latest SACD-ripper version (which ted_b has helped with), but fixing the problem with my PS3 that now causes a blank screen when I try to run SACD-ripper.
Now that I have a 'homogenous' set of OS, SACD-ripper and keys, I plan to try the following, unless I hear better advice from someone here:
1. Format the PS3's HDD (there is no game-related stuff on it; only used for SACD ripping)
2. Do a 'reset to default'
3. Reconfigure network and other stuff cleared by that reset
4. Reinstall OtherOS++
5. Install the 'new' SACD-ripper.pkg with keys
6. Cross my fingers and hold my breath!

Has anyone else struck this blank screen problem with a PS3 running CFW and SACD-ripper?
Regards, Daniel (Australia)