Error(s) in re-building vignettes:
--- re-building ‘OtherPackagesGallery.Rnw’ using knitr
Error: processing vignette 'OtherPackagesGallery.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'OtherPackagesGallery.tex' failed.
LaTeX errors:
! Undefined control sequence.
l.93 \hlkwd{library}\hldef
                          {(xtable)}
? 
! Emergency stop.
! Emergency stop.
l.93 
     
End of file on the terminal!

!  ==> Fatal error occurred, no output PDF file produced!
--- failed re-building ‘OtherPackagesGallery.Rnw’

--- re-building ‘listOfTablesGallery.Rnw’ using knitr
Error: processing vignette 'listOfTablesGallery.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'listOfTablesGallery.tex' failed.
LaTeX errors:
! Undefined control sequence.
l.93 \hlkwd{library}\hldef
                          {(xtable)}
? 
! Emergency stop.
! Emergency stop.
l.93 
     
End of file on the terminal!

!  ==> Fatal error occurred, no output PDF file produced!
--- failed re-building ‘listOfTablesGallery.Rnw’

--- re-building ‘margintable.Rnw’ using knitr
Error: processing vignette 'margintable.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'margintable.tex' failed.
LaTeX errors:
! Undefined control sequence.
l.108 \hlkwd{library}\hldef
                           {(xtable)}
? 
! Emergency stop.
! Emergency stop.
l.108 
      
End of file on the terminal!

!  ==> Fatal error occurred, no output PDF file produced!
--- failed re-building ‘margintable.Rnw’

--- re-building ‘xtableGallery.Rnw’ using knitr
Error: processing vignette 'xtableGallery.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'xtableGallery.tex' failed.
LaTeX errors:
! Undefined control sequence.
l.94 \hlkwd{library}\hldef
                          {(xtable)}
? 
! Emergency stop.
! Emergency stop.
l.94 
     
End of file on the terminal!

!  ==> Fatal error occurred, no output PDF file produced!
--- failed re-building ‘xtableGallery.Rnw’

SUMMARY: processing the following files failed:
  ‘OtherPackagesGallery.Rnw’ ‘listOfTablesGallery.Rnw’
  ‘margintable.Rnw’ ‘xtableGallery.Rnw’

Error: Vignette re-building failed.
Execution halted