XeTeX release 0.83 has been posted in Apple Installer and i-Package formats; see http://scripts.sil.org/xetex or my i-Directory within i-Installer. This release corrects the handling of \predisplaysize when using AAT/OT fonts. It also adds an error message if you try to \dump a format with preloaded AAT/OT fonts, as this is not supported. Jonathan