<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">The following source program<div><br></div><div><div>%!TEX encoding = UTF-8 Unicode</div><div>\documentclass{article}</div><div>\usepackage{fontspec}</div><div><br></div><div>\begin{document}</div><div>\fontspec{Myfont} OK</div><div> \end{document}</div><div><br></div><div>ran under LuaLaTeX/MacOSX 10.9.1 aborts with the message (a system error, not a TeX one, so very difficult to find the cause): <span style="font-family: Monaco; font-size: 10px;">Segmentation fault</span></div><div><br></div><div>Indeed there is no Myfont font in my system.</div></div><div><br></div><div>However, with Montain Lion, I got a message like « unavailable font » (I dont remember exactly) and at less I knew why…</div><div><br></div><div>Jacques André</div></body></html>