PGP Disks broken under Mac OS X Yosemite 10.10

Yesterday's release of Apple's OS X Yosemite breaks PGP Disks permanently. The volumes are not seen by Finder, yet SED reports them as mounted. Desktop Encryption is version 10.3.2.15413. It also can't 'unmount' the unseen volumes.

This same issue of PGP Disks apparently being mounted but not showing up on the Desktop has been going on for years, but only very sporadically, and it could always be cured by a hardware restart. Now with 10.10, it's completely broken. All PGP DIsks are useless.

I'd consider this a catastrophic failure, and one which should have been addressed long before this release went public.