This is XeTeX, Version 3.14159265-2.6-0.99991 (TeX Live 2014) (preloaded format=xelatex 2014.7.26)  20 OCT 2014 00:38
entering extended mode
 restricted \write18 enabled.
 %&-line parsing enabled.
**slides05.tex
(/usr/local/texlive/2014/texmf-dist/tex/latex/tools/x.tex
LaTeX2e <2014/05/01>
Babel <3.9k> and hyphenation patterns for 79 languages loaded.

! .
l.33   \batchmode \errmessage{}
                               \csname @@end\endcsname \end
This error message was generated by an \errmessage
command, so I can't give any explicit help.
Pretend that you're Hercule Poirot: Examine all clues,
and deduce the truth by order and method.

 ) 
Here is how much of TeX's memory you used:
 6 strings out of 493725
 177 string characters out of 6145912
 53033 words of memory out of 5000000
 3431 multiletter control sequences out of 15000+600000
 3640 words of font info for 14 fonts, out of 8000000 for 9000
 1328 hyphenation exceptions out of 8191
 5i,0n,1p,92b,8s stack positions out of 5000i,500n,10000p,200000b,80000s

No pages of output.