Error(s) in re-building vignettes:
  ...
--- re-building ‘MultiClassVtreat.Rmd’ using rmarkdown
--- finished re-building ‘MultiClassVtreat.Rmd’

--- re-building ‘SavingTreamentPlans.Rmd’ using rmarkdown
--- finished re-building ‘SavingTreamentPlans.Rmd’

--- re-building ‘VariableImportance.Rmd’ using rmarkdown
--- finished re-building ‘VariableImportance.Rmd’

--- re-building ‘vtreat.Rmd’ using rmarkdown
--- finished re-building ‘vtreat.Rmd’

--- re-building ‘vtreatCrossFrames.Rmd’ using rmarkdown
--- finished re-building ‘vtreatCrossFrames.Rmd’

--- re-building ‘vtreatGrouping.Rmd’ using rmarkdown
Loading required package: rquery
Quitting from lines 91-98 (vtreatGrouping.Rmd) 
Error: processing vignette 'vtreatGrouping.Rmd' failed with diagnostics:
VECTOR_ELT() can only be applied to a 'list', not a 'double'
--- failed re-building ‘vtreatGrouping.Rmd’

--- re-building ‘vtreatOverfit.Rmd’ using rmarkdown
--- finished re-building ‘vtreatOverfit.Rmd’

--- re-building ‘vtreatRareLevels.Rmd’ using rmarkdown
Quitting from lines 127-140 (vtreatRareLevels.Rmd) 
Error: processing vignette 'vtreatRareLevels.Rmd' failed with diagnostics:
VECTOR_ELT() can only be applied to a 'list', not a 'double'
--- failed re-building ‘vtreatRareLevels.Rmd’

--- re-building ‘vtreatScaleMode.Rmd’ using rmarkdown
--- finished re-building ‘vtreatScaleMode.Rmd’

--- re-building ‘vtreatSignificance.Rmd’ using rmarkdown
--- finished re-building ‘vtreatSignificance.Rmd’

--- re-building ‘vtreatSplitting.Rmd’ using rmarkdown
Quitting from lines 150-193 (vtreatSplitting.Rmd) 
Error: processing vignette 'vtreatSplitting.Rmd' failed with diagnostics:
VECTOR_ELT() can only be applied to a 'list', not a 'double'
--- failed re-building ‘vtreatSplitting.Rmd’

--- re-building ‘vtreatVariableTypes.Rmd’ using rmarkdown
--- finished re-building ‘vtreatVariableTypes.Rmd’

--- re-building ‘vtreat_article.pdf.asis’ using asis
--- finished re-building ‘vtreat_article.pdf.asis’

SUMMARY: processing the following files failed:
  ‘vtreatGrouping.Rmd’ ‘vtreatRareLevels.Rmd’ ‘vtreatSplitting.Rmd’

Error: Vignette re-building failed.
Execution halted