Am Samstag, den 30.01.2016, 22:50 -0600 schrieb Robert Susmilch: > Dear List, > > I am attempting to track down lack of instant preview for math > equations. It > seemed to be a random event between different files not working. I > chalked it > up to random incompatibilities between all the various classes and > preambles, > etc. However, even a new document doesn’t seem to work with a basic > equation. > I have looked into the tmp directory, and found that the previews are > not > generated because: > > !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! > ! > ! Fatal fontspec error: "cannot-use-pdftex" > ! > ! The fontspec package requires either XeTeX or LuaTeX to function. > ! > ! You must change your typesetting engine to, e.g., "xelatex" or > "lualatex" > ! instead of plain "latex" or "pdflatex". > ! > ! See the fontspec documentation for further information. > ! > ! For immediate help type H <return>. > !...............................................
Switch on "Use non-TeX fonts" in Document > Settings > Fonts. This should cause LyX to use XeTeX for preview generation. Jürgen
