Error(s) in re-building vignettes:
--- re-building 'gettingstarted.Rmd' using rmarkdown
--- finished re-building 'gettingstarted.Rmd'

--- re-building 'article.Rnw' using knitr
Warning in system(paste(shQuote(texi2dvi), if (quiet) "--quiet" else "",  :
  running command '"C:\PROGRA~1\MiKTeX\miktex\bin\x64\texify.exe" --quiet --pdf "article.tex" --max-iterations=20 -I "C:/r_packages/rinst/share/texmf/tex/latex" -I "C:/r_packages/rinst/share/texmf/bibtex/bst"' had status 1
Error: processing vignette 'article.Rnw' failed with diagnostics:
running 'texi2dvi' on 'article.tex' failed

LaTeX errors:
ules/vignettes/article.tex:302: LaTeX Error: Not in outer par mode.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
ules/vignettes/article.tex:333: LaTeX Error: Not in outer par mode.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
ules/vignettes/article.tex:336: LaTeX Error: Command \ttfamily invalid in math 
mode.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
ules/vignettes/article.tex:336: LaTeX Error: Command \ttfamily invalid in math 
mode.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
ules/vignettes/article.tex:384: LaTeX Error: Not in outer par mode.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
ules/vignettes/article.tex:388: LaTeX Error: Command \ttfamily invalid in math 
mode.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
ules/vignettes/article.tex:388: LaTeX Error: Command \ttfamily invalid in math 
mode.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
ules/vignettes/article.tex:388: LaTeX Error: Command \ttfamily invalid in math 
mode.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
ules/vignettes/article.tex:388: LaTeX Error: Command \ttfamily invalid in math 
mode.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
ules/vignettes/article.tex:472: LaTeX Error: Command \ttfamily invalid in math 
mode.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
ules/vignettes/article.tex:1021: LaTeX Error: Command \ttfamily invalid in math
 mode.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
ules/vignettes/article.tex:1021: LaTeX Error: Command \ttfamily invalid in math
 mode.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.

--- failed re-building 'article.Rnw'

SUMMARY: processing the following file failed:
  'article.Rnw'

Error: Vignette re-building failed.
Execution halted