Error(s) in re-building vignettes:
--- re-building ‘colorSpec-guide.Rmd’ using rmarkdown
--- finished re-building ‘colorSpec-guide.Rmd’

--- re-building ‘phenolred.Rmd’ using rmarkdown
--- finished re-building ‘phenolred.Rmd’

--- re-building ‘photoncounting.Rmd’ using rmarkdown
--- finished re-building ‘photoncounting.Rmd’

--- re-building ‘blueflame.rnw’ using knitr
Error: processing vignette 'blueflame.rnw' failed with diagnostics:
Running 'texi2dvi' on 'blueflame.tex' failed.
LaTeX errors:
! Undefined control sequence.
l.151 \hlkwd{library}\hldef
                           {( colorSpec )}
? 
! Emergency stop.
! Emergency stop.
l.151 
      
End of file on the terminal!

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

--- re-building ‘convexity.rnw’ using knitr
Error: processing vignette 'convexity.rnw' failed with diagnostics:
Running 'texi2dvi' on 'convexity.tex' failed.
LaTeX errors:
! Undefined control sequence.
l.160 \hlkwd{library}\hldef
                           {( colorSpec )}
? 
! Emergency stop.
! Emergency stop.
l.160 
      
End of file on the terminal!

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

--- re-building ‘emulation.rnw’ using knitr
06:38:34.050 WARN  colorSpec::product.colorSpec(). The returned matrix is ambiguous; because it depends on the splitting. Inspect the matrix carefully. 
06:38:34.062 WARN  colorSpec::product.colorSpec(). The returned matrix is ambiguous; because it depends on the splitting. Inspect the matrix carefully. 
Error: processing vignette 'emulation.rnw' failed with diagnostics:
Running 'texi2dvi' on 'emulation.tex' failed.
LaTeX errors:
! Undefined control sequence.
l.137 \hlkwd{library}\hldef
                           {( colorSpec )}
? 
! Emergency stop.
! Emergency stop.
l.137 
      
End of file on the terminal!

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

--- re-building ‘gallery.rnw’ using knitr
Error: processing vignette 'gallery.rnw' failed with diagnostics:
Running 'texi2dvi' on 'gallery.tex' failed.
LaTeX errors:
! Undefined control sequence.
l.126 \hlkwd{library}\hldef
                           {( colorSpec )}
? 
! Emergency stop.
! Emergency stop.
l.126 
      
End of file on the terminal!

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

--- re-building ‘inversion.rnw’ using knitr
Error: processing vignette 'inversion.rnw' failed with diagnostics:
Running 'texi2dvi' on 'inversion.tex' failed.
LaTeX errors:
! Undefined control sequence.
l.147 \hlkwd{library}\hldef
                           {( colorSpec )}
? 
! Emergency stop.
! Emergency stop.
l.147 
      
End of file on the terminal!

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

--- re-building ‘lens-aging.rnw’ using knitr
Error: processing vignette 'lens-aging.rnw' failed with diagnostics:
Running 'texi2dvi' on 'lens-aging.tex' failed.
LaTeX errors:
! Undefined control sequence.
l.147 \hlkwd{library}\hldef
                           {( colorSpec )}
? 
! Emergency stop.
! Emergency stop.
l.147 
      
End of file on the terminal!

!  ==> Fatal error occurred, no output PDF file produced!
--- failed re-building ‘lens-aging.rnw’

--- re-building ‘optimals.rnw’ using knitr
Error: processing vignette 'optimals.rnw' failed with diagnostics:
Running 'texi2dvi' on 'optimals.tex' failed.
LaTeX errors:
! Undefined control sequence.
l.125 \hlkwd{library}\hldef
                           {( colorSpec )}
? 
! Emergency stop.
! Emergency stop.
l.125 
      
End of file on the terminal!

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

SUMMARY: processing the following files failed:
  ‘blueflame.rnw’ ‘convexity.rnw’ ‘emulation.rnw’ ‘gallery.rnw’
  ‘inversion.rnw’ ‘lens-aging.rnw’ ‘optimals.rnw’

Error: Vignette re-building failed.
Execution halted