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

Attaching package: 'ssdtools'

The following objects are masked from 'package:stats':

    dgamma, dlnorm, dweibull, pgamma, plnorm, pweibull, qgamma, qlnorm,
    qweibull, rgamma, rlnorm, rweibull

Quitting from lines 37-42 (distributions.Rmd) 
Error: processing vignette 'distributions.Rmd' failed with diagnostics:
polygon edge not found
--- failed re-building ‘distributions.Rmd’

--- re-building ‘exposure-plots.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.

Attaching package: 'ssdtools'

The following objects are masked from 'package:stats':

    dgamma, dlnorm, dweibull, pgamma, plnorm, pweibull, qgamma, qlnorm,
    qweibull, rgamma, rlnorm, rweibull

Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_stringMetric, as.graphicsAnnot(x$label)) :
  no font could be found for family "Arial"
Warning in grid.Call(C_textBounds, as.graphicsAnnot(x$label), x$x, x$y,  :
  no font could be found for family "Arial"
Quitting from lines 25-31 (exposure-plots.Rmd) 
Error: processing vignette 'exposure-plots.Rmd' failed with diagnostics:
polygon edge not found
--- failed re-building ‘exposure-plots.Rmd’

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

Attaching package: 'ssdtools'

The following objects are masked from 'package:stats':

    dgamma, dlnorm, dweibull, pgamma, plnorm, pweibull, qgamma, qlnorm,
    qweibull, rgamma, rlnorm, rweibull


Attaching package: 'dplyr'

The following objects are masked from 'package:stats':

    filter, lag

The following objects are masked from 'package:base':

    intersect, setdiff, setequal, union

Quitting from lines 53-55 (faqs.Rmd) 
Error: processing vignette 'faqs.Rmd' failed with diagnostics:
polygon edge not found
--- failed re-building ‘faqs.Rmd’

--- re-building ‘small-sample-bias-ref.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
--- finished re-building ‘small-sample-bias-ref.Rmd’

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

Attaching package: 'ssdtools'

The following objects are masked from 'package:stats':

    dgamma, dlnorm, dweibull, pgamma, plnorm, pweibull, qgamma, qlnorm,
    qweibull, rgamma, rlnorm, rweibull

Quitting from lines 114-118 (ssdtools.Rmd) 
Error: processing vignette 'ssdtools.Rmd' failed with diagnostics:
polygon edge not found
--- failed re-building ‘ssdtools.Rmd’

--- re-building ‘small-sample-bias.pdf.asis’ using asis
--- finished re-building ‘small-sample-bias.pdf.asis’

SUMMARY: processing the following files failed:
  ‘distributions.Rmd’ ‘exposure-plots.Rmd’ ‘faqs.Rmd’ ‘ssdtools.Rmd’

Error: Vignette re-building failed.
Execution halted