This is pdfTeX, Version 3.1415926-1.40.10 (TeX Live 2009/Debian) (format=pdflatex 2011.3.28)  12 APR 2011 14:45
entering extended mode
 restricted \write18 enabled.
 %&-line parsing enabled.
**slides.te
(/usr/share/texmf-texlive/tex/latex/tools/x.tex
LaTeX2e <2009/09/24>
Babel <v3.8l> and hyphenation patterns for english, usenglishmax, dumylang, noh
yphenation, ngerman, german, german-x-2009-06-19, ngerman-x-2009-06-19, 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:
 8 strings out of 495021
 239 string characters out of 1181035
 45235 words of memory out of 3000000
 3297 multiletter control sequences out of 15000+50000
 3640 words of font info for 14 fonts, out of 3000000 for 9000
 28 hyphenation exceptions out of 8191
 5i,0n,1p,89b,8s stack positions out of 5000i,500n,10000p,200000b,50000s

No pages of output.
PDF statistics:
 0 PDF objects out of 1000 (max. 8388607)
 0 named destinations out of 1000 (max. 500000)
 1 words of extra memory for PDF output out of 10000 (max. 10000000)