(Technically this is OT for the XɘTeX list, but I suspect the folks who can help me are here…)
Minimal test case: % !TEX TS-program = lualatex \documentclass{minimal} \usepackage{unicode-math} \setmathfont{Cambria Math} \begin{document} \[ \dot x + \ddot y \] \end{document} Works with XɘLaTeX, but LuaLatex gives me this error: luaotfload | Font names database loaded: /home/chesky/.texlive2010/texmf-var/luatex-cache/generic/names/otfl-names.lua(load: /home/chesky/.texlive2010/texmf-var/luatex-cache/generic/fonts/otf/temp-cambria-cambria-math-1.lua) ! Missing control sequence inserted. <inserted text> \inaccessible l.5 \setmathfont{Cambria Math} ? h Please don't say `\def cs{...}', say `\def\cs{...}'. I've inserted an inaccessible control sequence so that your definition will be completed without mixing me up too badly. You can recover graciously from this error, if you're careful; see exercise 27.2 in The TeXbook. ? Any clues? —Joel -------------------------------------------------- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex