I haven't used LyX for some time and when I did so today I found that it was using luatex as the default for exporting pdf files. This produced errors. I evntually found how to return to the previous choice (pdflatex) but is there any way to configure LyX to use the previous representation of choices fir File -> Export? I couldn't find anything in Preferences.
Anthony -- Anthony Campbell - a...@acampbell.org.uk Microsoft-free zone - Using Debian GNU/Linux http://www.acampbell.org.uk - sample my ebooks at http://www.smashwords.com/profile/view/acampbell