From European Plextor site.
PlexTools Professional V2.14 released on 1 June 2004
* Bug Fix: several bug fixes
PlexTools Professional V2.13 released on 1 May 2004
* Changed: Option to save/load registry entries * Improved Q-Check PI/PO Test * CD/DVD Test: Support for DVD * Bug Fix: a few minor bug fixes
PlexTools Professional V2.12 released on 1 April 2004
* Added: Support for PX-712A and PX-712SA * New function: Q-Check PI/PO Test * Support for SpeedRead DVD