Error(s) in re-building vignettes:
--- re-building ‘boxjenkins.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.
Warning in sqrt(diag(as.matrix(Nmat[, , t + 1]))) : NaNs produced
Warning in sqrt(diag(as.matrix(Nmat[, , t + 1]))) : NaNs produced
Warning in sqrt(diag(as.matrix(Nmat[, , t + 1]))) : NaNs produced
Warning in sqrt(diag(as.matrix(Nmat[, , t + 1]))) : NaNs produced
Warning in sqrt(diag(as.matrix(Nmat[, , t + 1]))) : NaNs produced
Warning in sqrt(diag(as.matrix(Nmat[, , t + 1]))) : NaNs produced
Warning in sqrt(diag(as.matrix(Nmat[, , t + 1]))) : NaNs produced
Warning in sqrt(diag(as.matrix(Nmat[, , t + 1]))) : NaNs produced
Warning in sqrt(diag(as.matrix(Nmat[, , t + 1]))) : NaNs produced
Warning in sqrt(diag(as.matrix(Nmat[, , t + 1]))) : NaNs produced
Quitting from lines 88-100 (boxjenkins.Rmd) 
Error: processing vignette 'boxjenkins.Rmd' failed with diagnostics:
more elements supplied than there are to replace
--- failed re-building ‘boxjenkins.Rmd’

--- re-building ‘dictionary.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 ‘dictionary.Rmd’

--- re-building ‘intro.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 ‘intro.Rmd’

--- re-building ‘seatbelt.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.
Warning: Number of initial parameters is less than the required amount of parameters (3), recycling the initial parameters the required amount of times.
Warning in sqrt(diag(as.matrix(Nmat[, , t + 1]))) : NaNs produced
Warning: Number of initial parameters is less than the required amount of parameters (6), recycling the initial parameters the required amount of times.
Warning in sqrt(diag(as.matrix(Nmat[, , t + 1]))) : NaNs produced
Warning in sqrt(diag(as.matrix(Nmat[, , t + 1]))) : NaNs produced
--- finished re-building ‘seatbelt.Rmd’

--- re-building ‘selfspec.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 ‘selfspec.Rmd’

SUMMARY: processing the following file failed:
  ‘boxjenkins.Rmd’

Error: Vignette re-building failed.
Execution halted