Running examples in 'quanteda-Ex.R' failed
The error most likely occurred in:

> ### Name: sequences
> ### Title: find variable-length collocations with filtering
> ### Aliases: sequences is.sequences
> ### Keywords: collocations internal
> 
> ### ** Examples
> 
> toks <- tokens(corpus_segment(data_corpus_inaugural, what = "sentence"))
> toks <- tokens_select(toks, stopwords("english"), "remove", padding = TRUE)
> 
> # extracting multi-part proper nouns (capitalized terms)
> seqs <- sequences(toks, "^([A-Z][a-z\\-]{2,})", valuetype="regex", case_insensitive = FALSE)
> head(seqs, 10)
            collocation count length   lambda      sigma         z p
199       United States   153      2 20.52565 0.04352380 471.59594 0
97   Federal Government    32      2 16.07807 0.09312539 172.64966 0
34   General Government    24      2 14.50954 0.12914263 112.35286 0
157 National Government    11      2 12.88826 0.15847837  81.32504 0
83         Almighty God    15      2 13.10835 0.16301521  80.41181 0
10        Chief Justice    11      2 12.17009 0.18109481  67.20288 0
182      President Bush     6      2 11.87632 0.18741675  63.36850 0
9      Chief Magistrate    10      2 11.37940 0.22063436  51.57583 0
195   President Clinton     4      2 10.67352 0.22913765  46.58124 0
203      United Nations     8      2 10.72087 0.24598156  43.58402 0
> 
> # more efficient when applied to the same tokens object 
> toks_comp <- tokens_compound(toks, seqs)
> toks_comp_ir <- tokens_compound(tokens(data_corpus_irishbudget2010), seqs)
> 
> # types can be any words
> seqs2 <- sequences(toks, "^([a-z]+)$", valuetype="regex", case_insensitive = FALSE, 
+                    min_count = 2, ordered = TRUE)
tracemem[0x00000000243918b8 -> 0x00000000246e4698]: .Call qatd_cpp_sequences sequences.tokens sequences 
Error in qatd_cpp_sequences(x, features_id, types, min_count, max_size,  : 
  unimplemented type 'builtin' in 'coerceToReal'
Calls: sequences -> sequences.tokens -> qatd_cpp_sequences -> .Call
Execution halted