This is pdfTeX, Version 3.1415926-2.3-1.40.12 (TeX Live 2012/dev/Debian) (format=pdflatex 2012.4.10)  11 APR 2012 15:19
entering extended mode
 restricted \write18 enabled.
 %&-line parsing enabled.
**slides.tex
(./slides.tex
LaTeX2e <2011/06/27>
Babel <v3.8m> and hyphenation patterns for english, dumylang, nohyphenation, lo
aded.
! Undefined control sequence.
l.20 \institute
               {
? 
! Emergency stop.
l.20 \institute
               {
End of file on the terminal!

 
Here is how much of TeX's memory you used:
 13 strings out of 495065
 190 string characters out of 3182278
 45057 words of memory out of 3000000
 3294 multiletter control sequences out of 15000+200000
 3640 words of font info for 14 fonts, out of 3000000 for 9000
 14 hyphenation exceptions out of 8191
 7i,0n,6p,193b,8s stack positions out of 5000i,500n,10000p,200000b,50000s
!  ==> Fatal error occurred, no output PDF file produced!