A slightly newer version of the Panasonic software is available from Toshiba.
Thanks. Got that newer version, installed it and it opened OK. Put in a ‘dead’ DVD-RAM disk (tried it eventually on three of them, just in case one of the disks was physically bad) and waited an hour and a half for each to format. A window said the format was successful.
But when I put the disks in the recorder, it rejected them as incompatible. (Sometimes it won’t like the way the disk is formatted and will offer to format it its own way, but these are just rejected.)
I’ll get more new media when the current DVD-RAM disk ‘dies’, but my curiosity has me wondering why these are fine one day and not compatible the next, sometimes without having recorded or played back anything in the interim.
Could the recorder be killing them? Maybe that’s just a rhetorical question, but scratching my head about this is going to wear me a bald spot until I find out.