Error(s) in re-building vignettes:
--- re-building ‘tmle-npvi.Rnw’ using knitr
Error: processing vignette 'tmle-npvi.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'tmle-npvi.tex' failed.
LaTeX errors:
! Undefined control sequence.
\Ginclude@graphics ...\Ginput@path \set@curr@file 
                                                  {#1}\edef \uq@curr@file {\...
l.501   \includegraphics[width=6cm]{confInt-1}
                                              
! Undefined control sequence.
\Ginclude@graphics ...e \expandafter {\@curr@file 
                                                  }}\expandafter \filename@p...
l.501   \includegraphics[width=6cm]{confInt-1}
                                              
! Undefined control sequence.
<recently read> \unquote@name 
                              
l.501   \includegraphics[width=6cm]{confInt-1}
                                              
! Undefined control sequence.
<recently read> \quote@name 
                            
l.501   \includegraphics[width=6cm]{confInt-1}
                                              
! Undefined control sequence.
<recently read> \quote@name 
                            
l.501   \includegraphics[width=6cm]{confInt-1}
                                              
! LaTeX Error: File `confInt-1' not found.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
! Undefined control sequence.
\Ginclude@graphics ...\Ginput@path \set@curr@file 
                                                  {#1}\edef \uq@curr@file {\...
l.583 ...[width=\maxwidth]{fig/unnamed-chunk-14-1}
                                                  
! Undefined control sequence.
\Ginclude@graphics ...e \expandafter {\@curr@file 
                                                  }}\expandafter \filename@p...
l.583 ...[width=\maxwidth]{fig/unnamed-chunk-14-1}
                                                  
! Undefined control sequence.
<recently read> \unquote@name 
                              
l.583 ...[width=\maxwidth]{fig/unnamed-chunk-14-1}
                                                  
! Undefined control sequence.
<recently read> \quote@name 
                            
l.583 ...[width=\maxwidth]{fig/unnamed-chunk-14-1}
                                                  
! Undefined control sequence.
<recently read> \quote@name 
                            
l.583 ...[width=\maxwidth]{fig/unnamed-chunk-14-1}
                                                  
! LaTeX Error: File `fig/unnamed-chunk-14-1' not found.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
--- failed re-building ‘tmle-npvi.Rnw’

SUMMARY: processing the following file failed:
  ‘tmle-npvi.Rnw’

Error: Vignette re-building failed.
Execution halted