Error(s) in re-building vignettes:
--- re-building ‘tikzDevice.Rnw’ using knitr
Error: processing vignette 'tikzDevice.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'tikzDevice.tex' failed.
LaTeX errors:
! Undefined control sequence.
\Ginclude@graphics ...\Ginput@path \set@curr@file 
                                                  {#1}\edef \uq@curr@file {\...
l.168 ...\includegraphics[width=4.75in]{img/Rlogo}
                                                  };
! Undefined control sequence.
\Ginclude@graphics ...e \expandafter {\@curr@file 
                                                  }}\expandafter \filename@p...
l.168 ...\includegraphics[width=4.75in]{img/Rlogo}
                                                  };
! Undefined control sequence.
<recently read> \unquote@name 
                              
l.168 ...\includegraphics[width=4.75in]{img/Rlogo}
                                                  };
! Undefined control sequence.
<recently read> \quote@name 
                            
l.168 ...\includegraphics[width=4.75in]{img/Rlogo}
                                                  };
! Undefined control sequence.
<recently read> \quote@name 
                            
l.168 ...\includegraphics[width=4.75in]{img/Rlogo}
                                                  };
! LaTeX Error: File `img/Rlogo' 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.251     \includegraphics{figs/pdf-example}
                                            
! Undefined control sequence.
\Ginclude@graphics ...e \expandafter {\@curr@file 
                                                  }}\expandafter \filename@p...
l.251     \includegraphics{figs/pdf-example}
                                            
! Undefined control sequence.
<recently read> \unquote@name 
                              
l.251     \includegraphics{figs/pdf-example}
                                            
! Undefined control sequence.
<recently read> \quote@name 
                            
l.251     \includegraphics{figs/pdf-example}
                                            
! Undefined control sequence.
<recently read> \quote@name 
                            
l.251     \includegraphics{figs/pdf-example}
                                            
! LaTeX Error: File `figs/pdf-example' 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.1193 \includegraphics{img/xelatexEx.pdf}
                                          
! Undefined control sequence.
\Ginclude@graphics ...e \expandafter {\@curr@file 
                                                  }}\expandafter \filename@p...
l.1193 \includegraphics{img/xelatexEx.pdf}
                                          
! Undefined control sequence.
<recently read> \unquote@name 
                              
l.1193 \includegraphics{img/xelatexEx.pdf}
                                          
! Undefined control sequence.
<recently read> \quote@name 
                            
l.1193 \includegraphics{img/xelatexEx.pdf}
                                          
! Undefined control sequence.
<recently read> \quote@name 
                            
l.1193 \includegraphics{img/xelatexEx.pdf}
                                          
! LaTeX Error: File `img/xelatexEx.pdf' 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.1266 ...s[width=4.25in]{img/plotmathDefault.pdf}
                                                  
! Undefined control sequence.
\Ginclude@graphics ...e \expandafter {\@curr@file 
                                                  }}\expandafter \filename@p...
l.1266 ...s[width=4.25in]{img/plotmathDefault.pdf}
                                                  
! Undefined control sequence.
<recently read> \unquote@name 
                              
l.1266 ...s[width=4.25in]{img/plotmathDefault.pdf}
                                                  
! Undefined control sequence.
<recently read> \quote@name 
                            
l.1266 ...s[width=4.25in]{img/plotmathDefault.pdf}
                                                  
! Undefined control sequence.
<recently read> \quote@name 
                            
l.1266 ...s[width=4.25in]{img/plotmathDefault.pdf}
                                                  
! LaTeX Error: File `img/plotmathDefault.pdf' 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.1271 ...hics[width=4.25in]{img/plotmathTikz.pdf}
                                                  
! Undefined control sequence.
\Ginclude@graphics ...e \expandafter {\@curr@file 
                                                  }}\expandafter \filename@p...
l.1271 ...hics[width=4.25in]{img/plotmathTikz.pdf}
                                                  
! Undefined control sequence.
<recently read> \unquote@name 
                              
l.1271 ...hics[width=4.25in]{img/plotmathTikz.pdf}
                                                  
! Undefined control sequence.
<recently read> \quote@name 
                            
l.1271 ...hics[width=4.25in]{img/plotmathTikz.pdf}
                                                  
! Undefined control sequence.
<recently read> \quote@name 
                            
l.1271 ...hics[width=4.25in]{img/plotmathTikz.pdf}
                                                  
! LaTeX Error: File `img/plotmathTikz.pdf' not found.

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

SUMMARY: processing the following file failed:
  ‘tikzDevice.Rnw’

Error: Vignette re-building failed.
Execution halted