Error(s) in re-building vignettes:
--- re-building ‘PhenotypeSimulator.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
--- finished re-building ‘PhenotypeSimulator.Rmd’

--- re-building ‘Sample-scripts-external-genotype-simulation.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
Error: processing vignette 'Sample-scripts-external-genotype-simulation.Rmd' failed with diagnostics:
Failed to locate the ‘weave’ output file (by engine ‘knitr::rmarkdown’) for vignette with name ‘Sample-scripts-external-genotype-simulation’. The following files exist in directory ‘.’: ‘PhenotypeSimulator.R’, ‘PhenotypeSimulator.Rmd’, ‘PhenotypeSimulator.html’, ‘PhenotypeSimulator.md’, ‘Sample-scripts-external-genotype-simulation.R’, ‘Sample-scripts-external-genotype-simulation.Rmd’, ‘Sample-scripts-external-genotype-simulation.md’, ‘Simulation-and-LinearModel.Rmd’, ‘SimulationAndLinearModel.bib’, ‘SimulationBasedOnExampleData.Rmd’, ‘Vignette-example-data.bib’, ‘genotype-simulation.bib’, ‘plos-genetics.csl’, ‘sample-scripts-external-genotype-simulation.html’
--- failed re-building ‘Sample-scripts-external-genotype-simulation.Rmd’

--- re-building ‘Simulation-and-LinearModel.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
--- finished re-building ‘Simulation-and-LinearModel.Rmd’

--- re-building ‘SimulationBasedOnExampleData.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
--- finished re-building ‘SimulationBasedOnExampleData.Rmd’

SUMMARY: processing the following file failed:
  ‘Sample-scripts-external-genotype-simulation.Rmd’

Error: Vignette re-building failed.
Execution halted