I have some problems after installing the latest 64bit-MiKTeX as well as the latest packages through the package manager. It seems that there is a problem with the combination of fontspec and expl3 from the l3kernel. I read about errors with newer version of fontspec in combination with expl3 and had a look at different workarounds, but I think that this one is different.
The log is below.
Any hint is welcome!
Bye Holger
LuaTeX: beta-0.80.0 (MiKTeX 2.9 64-bit) (rev 5238)
l3kernel, l3packages etc: packaged on 2015-11-05
complete log file: http://pastebin.com/VU2DJEqG
example:
\documentclass[12pt, a4paper]{article}
\usepackage{fontspec}
% workaround for suppressfontnotfounderror
\ifdefined\suppressfontnotfounderror
\expandafter\let\csname xetex_suppressfontnotfounderror:D\endcsname
\suppressfontnotfounderror
\else
\expandafter\let\csname xetex_suppressfontnotfounderror:D\endcsname
\luatexsuppressfontnotfounderror
\fi
\newfontfamily{\Arial}
[Ligatures=TeX,UprightFont=arial.ttf]{arial}
\begin{document}
\Arial Some text in Arial...
\rmfamily Some text in regular font...
\end{document}
some of the errors:
Undefined control sequence. ...\c_e_fp { 2.718 2818 2845 9045 }
Undefined control sequence. ...\c_e_fp { 2.718 2818 2845 9045 }
LuaTeX error [\directlua]:1: invalid escape sequence near '\s'. ...\c_e_fp { 2.718 2818 2845 9045 }
Missing number, treated as zero. ...\c_e_fp { 2.718 2818 2845 9045 }
Undefined control sequence. \fp_const:Nn \c_one_fp { 1 }
Undefined control sequence. \fp_const:Nn \c_one_fp { 1 }
LuaTeX error [\directlua]:1: invalid escape sequence near '\s'. \fp_const:Nn \c_one_fp { 1 }
Missing number, treated as zero. \fp_const:Nn \c_one_fp { 1 }
Undefined control sequence. ...\c_pi_fp { 3.141 5926 5358 9793 }
Undefined control sequence. ...\c_pi_fp { 3.141 5926 5358 9793 }
LuaTeX error [\directlua]:1: invalid escape sequence near '\s'. ...\c_pi_fp { 3.141 5926 5358 9793 }
Missing number, treated as zero. ...\c_pi_fp { 3.141 5926 5358 9793 }
Undefined control sequence. ...one_degree_fp { 0.0 1745 3292 5199 4330 }
Undefined control sequence. ...one_degree_fp { 0.0 1745 3292 5199 4330 }
LuaTeX error [\directlua]:1: invalid escape sequence near '\s'. ...one_degree_fp { 0.0 1745 3292 5199 4330 }
Missing number, treated as zero. ...one_degree_fp { 0.0 1745 3292 5199 4330 }
Undefined control sequence. { \i }
Undefined control sequence. { \i }
LuaTeX error [\directlua]:1: invalid escape sequence near '\i'. { \i }
Missing number, treated as zero. { \i }
Undefined control sequence. { \q_recursion_tail }
Undefined control sequence. { \q_recursion_tail }
LuaTeX error [\directlua]:1: invalid escape sequence near '\q'. { \q_recursion_tail }
Missing number, treated as zero. { \q_recursion_tail }
Undefined control sequence. { \q_recursion_tail }
Undefined control sequence. { \q_recursion_tail }
LuaTeX error [\directlua]:1: invalid escape sequence near '\q'. { \q_recursion_tail }
Missing number, treated as zero. { \q_recursion_tail }
Undefined control sequence. { \q_recursion_tail }
Undefined control sequence. { \q_recursion_tail }
LuaTeX error [\directlua]:1: invalid escape sequence near '\q'. { \q_recursion_tail }
Missing number, treated as zero. { \q_recursion_tail }
Undefined control sequence. { \q_recursion_tail }
Undefined control sequence. { \q_recursion_tail }
LuaTeX error [\directlua]:1: invalid escape sequence near '\q'. { \q_recursion_tail }
Missing number, treated as zero. { \q_recursion_tail }
Undefined control sequence. { \textsigma }
