This is XeTeX, Version 3.1415926-2.4-0.9998 (TeX Live 2012) (format=xelatex 2013.5.13)  22 SEP 2013 15:58
entering extended mode
 restricted \write18 enabled.
 %&-line parsing enabled.
**slides01.tex
(/usr/local/texlive/2012/texmf-dist/tex/latex/tools/x.tex
LaTeX2e <2011/06/27>
Babel <v3.8m> and hyphenation patterns for english, dumylang, nohyphenation, ge
rman-x-2012-05-30, ngerman-x-2012-05-30, afrikaans, ancientgreek, ibycus, arabi
c, armenian, basque, bulgarian, catalan, pinyin, coptic, croatian, czech, danis
h, dutch, ukenglish, usenglishmax, esperanto, estonian, ethiopic, farsi, finnis
h, french, friulan, galician, german, ngerman, swissgerman, monogreek, greek, h
ungarian, icelandic, assamese, bengali, gujarati, hindi, kannada, malayalam, ma
rathi, oriya, panjabi, tamil, telugu, indonesian, interlingua, irish, italian, 
kurmanji, latin, latvian, lithuanian, mongolian, mongolianlmc, bokmal, nynorsk,
 piedmontese, polish, portuguese, romanian, romansh, russian, sanskrit, serbian
, serbianc, slovak, slovenian, spanish, swedish, turkish, turkmen, ukrainian, u
ppersorbian, welsh, loaded.

! .
l.34   \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 493994
 177 string characters out of 3150335
 48136 words of memory out of 3000000
 3368 multiletter control sequences out of 15000+200000
 3640 words of font info for 14 fonts, out of 3000000 for 9000
 1144 hyphenation exceptions out of 8191
 5i,0n,1p,92b,8s stack positions out of 5000i,500n,10000p,200000b,50000s

No pages of output.