我正在尝试在乳胶模板中包含 Unicode 字符，如下所示
\documentclass[11pt]{article}
\usepackage{acl2015}
\usepackage{xunicode}
\usepackage{fontspec}
\setmainfont{Times}
\newfontfamily{\malayalam}{Meera}
\usepackage{url}
\usepackage{latexsym}
\section{\malayalam ന മ പ ഗ ച ദ തീ}
{\malayalam ന മ പ ഗ ച ദ തീ \\
ന മ പ ഗ ച ദ തീ \\
ന മ പ ഗ ച ദ തീ \\
ന മ പ ഗ ച ദ തീ \\}
Back to english again...
The following instructions are directed to authors of papers submitted
to ACL-2015 or accepted for publication in its proceedings. All
authors are required to adhere to these specifications. Authors are
required to provide a Portable Document Format (PDF) version of their
papers. \textbf{The proceedings are designed for printing on A4
paper.}
但它给了我错误：
! LaTeX Error: this package currently works only with XeTeX You are not using XeTeX, so we are exiting cleanly!Continuing may lead to 'unavailable font metrics' errors!.See the LaTeX manual or LaTeX Companion for explanation.Type H <return> for immediate help.... ...sname\relax\expandafter\notXeTeXformat\fi
! 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>.!............................................... }
我使用的是Windows 7和Tex Maker作为编辑器，系统中也安装了Xelatex。
有什么帮助吗？
更新：当我尝试使用命令行模式进行编译时，它给出“致命文件错误”