for non-standard things in the check directory

Error(s) in re-building vignettes:
  ...
--- re-building 'TSTr.Rmd' using rmarkdown
Quitting from lines 167-170 (TSTr.Rmd) 
Error: processing vignette 'TSTr.Rmd' failed with diagnostics:
'length = 742' in coercion to 'logical(1)'
--- failed re-building 'TSTr.Rmd'

SUMMARY: processing the following file failed:
  'TSTr.Rmd'

Error: Vignette re-building failed.
Execution halted
Found the following files/directories:
  'XMIwords.txt'
Found the following files/directories:
  ‘XMIwords.txt’
Error(s) in re-building vignettes:
--- re-building ‘TSTr.Rmd’ using rmarkdown
Quitting from lines 167-170 (TSTr.Rmd) 
Error: processing vignette 'TSTr.Rmd' failed with diagnostics:
'length = 241' in coercion to 'logical(1)'
--- failed re-building ‘TSTr.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Found the following files/directories:
  ‘XMIwords.txt’
Error(s) in re-building vignettes:
--- re-building ‘TSTr.Rmd’ using rmarkdown
Quitting from lines 167-170 (TSTr.Rmd) 
Error: processing vignette 'TSTr.Rmd' failed with diagnostics:
'length = 1141' in coercion to 'logical(1)'
--- failed re-building ‘TSTr.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Found the following files/directories:
  ‘XMIwords.txt’
Found the following files/directories:
  ‘XMIwords.txt’
Found the following files/directories:
  ‘XMIwords.txt’