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

> ### Name: manageCache
> ### Title: Manage the size of a cache
> ### Aliases: manageCache
> 
> ### ** Examples
> 
> # Create a cache directory and fill it with 1.6 MB of data
> CACHE_DIR <- tempdir()
> write.csv(matrix(1,400,500), file=file.path(CACHE_DIR,'m1.csv'))
> write.csv(matrix(2,400,500), file=file.path(CACHE_DIR,'m2.csv'))
> write.csv(matrix(3,400,500), file=file.path(CACHE_DIR,'m3.csv'))
> write.csv(matrix(4,400,500), file=file.path(CACHE_DIR,'m4.csv'))
> for (file in list.files(CACHE_DIR, full.names=TRUE)) {
+   print(file.info(file)[,c(1,6)])
+ }
                              size               atime
D:\\temp\\Rtmpe0Y72m/m1.csv 406088 2018-10-30 14:25:49
                              size               atime
D:\\temp\\Rtmpe0Y72m/m2.csv 406088 2018-10-30 14:25:50
                              size               atime
D:\\temp\\Rtmpe0Y72m/m3.csv 406088 2018-10-30 14:25:50
                              size               atime
D:\\temp\\Rtmpe0Y72m/m4.csv 406088 2018-10-30 14:25:50
> 
> # Remove files based on access time until we get under 1 MB
> manageCache(CACHE_DIR, extensions='csv', maxCacheSize=1, sortBy='atime')
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: manageCache ... tryCatch -> tryCatchList -> tryCatchOne -> <Anonymous>
Execution halted