Running examples in 'tm.plugin.factiva-Ex.R' failed
The error most likely occurred in:

> ### Name: FactivaSource
> ### Title: Factiva Source
> ### Aliases: FactivaSource getElem.FactivaSource eoi.FactivaSource
> 
> ### ** Examples
> 
> ## Not run: 
> ##D     ## For an XML file
> ##D     library(tm)
> ##D     file <- system.file("texts", "reut21578-factiva.xml",
> ##D                         package = "tm.plugin.factiva")
> ##D     source <- FactivaSource(file)
> ##D     corpus <- Corpus(source, readerControl = list(language = NA))
> ##D 
> ##D     # See the contents of the documents
> ##D     inspect(corpus)
> ##D 
> ##D     # See meta-data associated with first article
> ##D     meta(corpus[[1]])
> ## End(Not run)
> 
>     ## For an HTML file
>     library(tm)
Loading required package: NLP
>     file <- system.file("texts", "factiva_test.html", 
+                         package = "tm.plugin.factiva")
>     source <- FactivaSource(file)
>     corpus <- Corpus(source, readerControl = list(language = NA))
Error in namespaceExport(ns, exports) : 
  undefined exports: %s!=%, %s!==%, %s+%, %s<%, %s<=%, %s==%, %s===%, %s>%, %s>=%, %stri!=%, %stri!==%, %stri+%, %stri<%, %stri<=%, %stri==%, %stri===%, %stri>%, %stri>=%, stri_datetime_add<-, stri_sub<-, stri_subset<-, stri_subset_charclass<-, stri_subset_coll<-, stri_subset_fixed<-, stri_subset_regex<-, stri_c, stri_c_list, stri_cmp, stri_cmp_eq, stri_cmp_equiv, stri_cmp_ge, stri_cmp_gt, stri_cmp_le, stri_cmp_lt, stri_cmp_neq, stri_cmp_nequiv, stri_compare, stri_conv, stri_count, stri_count_boundaries, stri_count_charclass, stri_count_coll, stri_count_fixed, stri_count_regex, stri_count_words, stri_datetime_add, stri_datetime_create, stri_datetime_fields, stri_datetime_format, stri_datetime_fstr, stri_datetime_now, stri_datetime_parse, stri_datetime_symbols, stri_detect, stri_detect_charclass, stri_detect_coll, stri_detect_fixed, stri_detect_regex, stri_dup, stri_duplicated, stri_duplicated_any, stri_enc_detect, stri_enc_detect2, stri_enc_fromutf32, stri_enc_get, stri_enc_inf
Calls: Corpus ... tryCatch -> tryCatchList -> tryCatchOne -> <Anonymous>
Execution halted