what do the warnings mean when I try to document

[softloud]

==> devtools::document(roclets = c('rd', 'collate', 'namespace'))

ℹ Updating supermetroid documentation
ℹ Loading supermetroid
Warning in grepl("^. Generated by roxygen2", first) :
  unable to translate '<89>PNG' to a wide string
Warning in grepl("^. Generated by roxygen2", first) :
  input string 1 is invalid
Documentation completed

[softloud]

And is this why the package failed last night when I tried to add a new dataset?

• run each function separately