Error(s) in re-building vignettes:
--- re-building ‘trend.Rnw’ using Sweave
Loading required package: trend
Error: processing vignette 'trend.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'trend.tex' failed.
LaTeX errors:
! Undefined control sequence.
\Ginclude@graphics ...\Ginput@path \set@curr@file 
                                                  {#1}\edef \uq@curr@file {\...
l.175 \includegraphics{trend-004}
                                 
! Undefined control sequence.
\Ginclude@graphics ...e \expandafter {\@curr@file 
                                                  }}\expandafter \filename@p...
l.175 \includegraphics{trend-004}
                                 
! Undefined control sequence.
<recently read> \unquote@name 
                              
l.175 \includegraphics{trend-004}
                                 
! Undefined control sequence.
<recently read> \quote@name 
                            
l.175 \includegraphics{trend-004}
                                 
! Undefined control sequence.
<recently read> \quote@name 
                            
l.175 \includegraphics{trend-004}
                                 
! LaTeX Error: File `trend-004' 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.538 \includegraphics{trend-014}
                                 
! Undefined control sequence.
\Ginclude@graphics ...e \expandafter {\@curr@file 
                                                  }}\expandafter \filename@p...
l.538 \includegraphics{trend-014}
                                 
! Undefined control sequence.
<recently read> \unquote@name 
                              
l.538 \includegraphics{trend-014}
                                 
! Undefined control sequence.
<recently read> \quote@name 
                            
l.538 \includegraphics{trend-014}
                                 
! Undefined control sequence.
<recently read> \quote@name 
                            
l.538 \includegraphics{trend-014}
                                 
! LaTeX Error: File `trend-014' 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.581 \includegraphics{trend-016}
                                 
! Undefined control sequence.
\Ginclude@graphics ...e \expandafter {\@curr@file 
                                                  }}\expandafter \filename@p...
l.581 \includegraphics{trend-016}
                                 
! Undefined control sequence.
<recently read> \unquote@name 
                              
l.581 \includegraphics{trend-016}
                                 
! Undefined control sequence.
<recently read> \quote@name 
                            
l.581 \includegraphics{trend-016}
                                 
! Undefined control sequence.
<recently read> \quote@name 
                            
l.581 \includegraphics{trend-016}
                                 
! LaTeX Error: File `trend-016' 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.631 \includegraphics{trend-018}
                                 
! Undefined control sequence.
\Ginclude@graphics ...e \expandafter {\@curr@file 
                                                  }}\expandafter \filename@p...
l.631 \includegraphics{trend-018}
                                 
! Undefined control sequence.
<recently read> \unquote@name 
                              
l.631 \includegraphics{trend-018}
                                 
! Undefined control sequence.
<recently read> \quote@name 
                            
l.631 \includegraphics{trend-018}
                                 
! Undefined control sequence.
<recently read> \quote@name 
                            
l.631 \includegraphics{trend-018}
                                 
! LaTeX Error: File `trend-018' not found.

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

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

Error: Vignette re-building failed.
Execution halted