Just saw this at another forum 
Revision History
Version 1.3.11.2: 2003 11 06
WriteDVD: Changed behaviour of "maximum" setting to behave more "automatic"
additional fix to avoid "file structure errors" when using "Write Existing Data"
preliminary support for IFO files generated by Philips DVD Recorders
improved workaround for read errors with some drives (Pioneer 120S, Plextor PX-116A, TEAC DV-516E)
http://www.elby.ch/en/products/clone_dvd/index.html
Revision History
Version 1.3.11.2: 2003 11 06
WriteDVD: Changed behaviour of "maximum" setting to behave more "automatic"
additional fix to avoid "file structure errors" when using "Write Existing Data"
preliminary support for IFO files generated by Philips DVD Recorders
improved workaround for read errors with some drives (Pioneer 120S, Plextor PX-116A, TEAC DV-516E)
http://www.elby.ch/en/products/clone_dvd/index.html