Error(s) in re-building vignettes:
  ...
--- re-building ‘WeightedCluster.Rnw’ using knitr
** Processing: graphics/WC-silhouette-indexplot-1.png
5250x3000 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 322109 bytes
Input file size = 322655 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 282828
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 282828

Output IDAT size = 282828 bytes (39281 bytes decrease)
Output file size = 282906 bytes (39749 bytes = 12.32% decrease)

Error: processing vignette 'WeightedCluster.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'WeightedCluster.tex' failed.
LaTeX errors:
! Undefined control sequence.
l.195 \hldef
            {R> }\hlkwd{install.packages}\hldef{(}\hlsng{"WeightedCluster"}\...

? 
! Emergency stop.
l.195 
      
End of file on the terminal!

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

--- re-building ‘WeightedClusterFR.Rnw’ using knitr
** Processing: graphics/WC-silhouette-indexplot-1.png
4200x3000 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 311289 bytes
Input file size = 311811 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 271604
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 271604

Output IDAT size = 271604 bytes (39685 bytes decrease)
Output file size = 271682 bytes (40129 bytes = 12.87% decrease)

Error: processing vignette 'WeightedClusterFR.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'WeightedClusterFR.tex' failed.
LaTeX errors:
! Undefined control sequence.
l.197 \hldef
            {R> }\hlkwd{install.packages}\hldef{(}\hlsng{"WeightedCluster"}\...

? 
! Emergency stop.
l.197 
      
End of file on the terminal!

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

--- re-building ‘WeightedClusterPreview.Rnw’ using knitr
Error: processing vignette 'WeightedClusterPreview.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'WeightedClusterPreview.tex' failed.
LaTeX errors:
! Undefined control sequence.
l.155 \hldef
            {R> }\hlkwd{install.packages}\hldef{(}\hlsng{"WeightedCluster"}\...

? 
! Emergency stop.
l.155 
      
End of file on the terminal!

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

SUMMARY: processing the following files failed:
  ‘WeightedCluster.Rnw’ ‘WeightedClusterFR.Rnw’
  ‘WeightedClusterPreview.Rnw’

Error: Vignette re-building failed.
Execution halted