Error(s) in re-building vignettes:
  ...
--- re-building ‘sandwich-CL.Rnw’ using Sweave
Loading required package: zoo

Attaching package: ‘zoo’

The following objects are masked from ‘package:base’:

    as.Date, as.Date.numeric


Attaching package: ‘pcse’

The following object is masked from ‘package:sandwich’:

    vcovPC

Classes and Methods for R developed in the
Political Science Computational Laboratory
Department of Political Science
Stanford University
Simon Jackman
hurdle and zeroinfl functions by Achim Zeileis
Error: processing vignette 'sandwich-CL.Rnw' failed with diagnostics:
Running ‘texi2dvi’ on ‘sandwich-CL.tex’ failed.
LaTeX errors:
! Undefined control sequence.
<recently read> \Hy@colorlink 
                              
l.71 \begin{document}
                     
! Undefined control sequence.
\close@pdflink ->\Hy@endcolorlink 
                                  \Hy@VerboseLinkStop \pdfendlink 
l.71 \begin{document}
                     
! Undefined control sequence.
<recently read> \Hy@colorlink 
                              
l.71 \begin{document}
                     
! Undefined control sequence.
\close@pdflink ->\Hy@endcolorlink 
                                  \Hy@VerboseLinkStop \pdfendlink 
l.71 \begin{document}
                     
--- failed re-building ‘sandwich-CL.Rnw’

--- re-building ‘sandwich-OOP.Rnw’ using Sweave
Loading required package: car
Loading required package: carData
Loading required package: lmtest
Loading required package: zoo

Attaching package: ‘zoo’

The following objects are masked from ‘package:base’:

    as.Date, as.Date.numeric

Loading required package: sandwich
Loading required package: survival
Error: processing vignette 'sandwich-OOP.Rnw' failed with diagnostics:
Running ‘texi2dvi’ on ‘sandwich-OOP.tex’ failed.
LaTeX errors:
! Undefined control sequence.
<recently read> \Hy@colorlink 
                              
l.46 \begin{document}
                     
! Undefined control sequence.
\close@pdflink ->\Hy@endcolorlink 
                                  \Hy@VerboseLinkStop \pdfendlink 
l.46 \begin{document}
                     
! Undefined control sequence.
<recently read> \Hy@colorlink 
                              
l.46 \begin{document}
                     
! Undefined control sequence.
\close@pdflink ->\Hy@endcolorlink 
                                  \Hy@VerboseLinkStop \pdfendlink 
l.46 \begin{document}
                     
--- failed re-building ‘sandwich-OOP.Rnw’

--- re-building ‘sandwich.Rnw’ using Sweave

Attaching package: ‘zoo’

The following objects are masked from ‘package:base’:

    as.Date, as.Date.numeric

Error: processing vignette 'sandwich.Rnw' failed with diagnostics:
Running ‘texi2dvi’ on ‘sandwich.tex’ failed.
LaTeX errors:
! Undefined control sequence.
<recently read> \Hy@colorlink 
                              
l.52 \begin{document}
                     
! Undefined control sequence.
\close@pdflink ->\Hy@endcolorlink 
                                  \Hy@VerboseLinkStop \pdfendlink 
l.52 \begin{document}
                     
! Undefined control sequence.
<recently read> \Hy@colorlink 
                              
l.52 \begin{document}
                     
! Undefined control sequence.
\close@pdflink ->\Hy@endcolorlink 
                                  \Hy@VerboseLinkStop \pdfendlink 
l.52 \begin{document}
                     
! Undefined control sequence.
<recently read> \Hy@colorlink 
                              
l.52 \begin{document}
                     
! Undefined control sequence.
\close@pdflink ->\Hy@endcolorlink 
                                  \Hy@VerboseLinkStop \pdfendlink 
l.52 \begin{document}
                     
! Undefined control sequence.
<recently read> \Hy@colorlink 
                              
l.52 \begin{document}
                     
! Undefined control sequence.
\close@pdflink ->\Hy@endcolorlink 
                                  \Hy@VerboseLinkStop \pdfendlink 
l.52 \begin{document}
                     
--- failed re-building ‘sandwich.Rnw’

SUMMARY: processing the following files failed:
  ‘sandwich-CL.Rnw’ ‘sandwich-OOP.Rnw’ ‘sandwich.Rnw’

Error: Vignette re-building failed.
Execution halted