Error(s) in re-building vignettes:
--- re-building 'doptimal.Rnw' using Sweave
Warning in system(paste(shQuote(texi2dvi), if (quiet) "--quiet" else "",  :
  running command '"D:\compiler\texmf\miktex\bin\texify.exe" --quiet --pdf "doptimal.tex" --max-iterations=20 -I "D:/RCompile/recent/R4/share/texmf/tex/latex" -I "D:/RCompile/recent/R4/share/texmf/bibtex/bst"' had status 1
Error: processing vignette 'doptimal.Rnw' failed with diagnostics:
Failed to locate 'texi2pdf' output file 'doptimal.pdf' for vignette with name 'doptimal' and engine 'utils::Sweave'. The following files exist in working directory 'D:\RCompile\CRANpkg\local\4.0gcc8\sdpt3r.Rcheck\vign_test\sdpt3r\vignettes': 'MaxCutGraph.png' (29556 bytes), 'doptimal.Rnw' (11994 bytes), 'doptimal.tex' (11966 bytes), 'dwd.Rnw' (7133 bytes), 'etp.Rnw' (6559 bytes), 'gpp.Rnw' (6541 bytes), 'jss.dtx' (47445 bytes), 'lmi.Rnw' (8661 bytes), 'logcheby.Rnw' (6614 bytes), 'lovasz.Rnw' (5513 bytes), 'maxcut.Rnw' (11697 bytes), 'maxkcut.Rnw' (7068 bytes), 'minelips.Rnw' (5828 bytes), 'nearcorr.Rnw' (13117 bytes), 'sdpt3r.bib' (8436 bytes), 'toeplitz.Rnw' (7745 bytes)
--- failed re-building 'doptimal.Rnw'

--- re-building 'dwd.Rnw' using Sweave
--- finished re-building 'dwd.Rnw'

--- re-building 'etp.Rnw' using Sweave
--- finished re-building 'etp.Rnw'

--- re-building 'gpp.Rnw' using Sweave
--- finished re-building 'gpp.Rnw'

--- re-building 'lmi.Rnw' using Sweave
--- finished re-building 'lmi.Rnw'

--- re-building 'logcheby.Rnw' using Sweave
--- finished re-building 'logcheby.Rnw'

--- re-building 'lovasz.Rnw' using Sweave
--- finished re-building 'lovasz.Rnw'

--- re-building 'maxcut.Rnw' using Sweave
--- finished re-building 'maxcut.Rnw'

--- re-building 'maxkcut.Rnw' using Sweave
--- finished re-building 'maxkcut.Rnw'

--- re-building 'minelips.Rnw' using Sweave
--- finished re-building 'minelips.Rnw'

--- re-building 'nearcorr.Rnw' using Sweave
--- finished re-building 'nearcorr.Rnw'

--- re-building 'toeplitz.Rnw' using Sweave
--- finished re-building 'toeplitz.Rnw'

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

Error: Vignette re-building failed.
Execution halted