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

> ### Name: prep
> ### Title: Creates One Finalized Table Ready for Statistical Analysis
> ### Aliases: prep
> 
> ### ** Examples
> 
> data(stroopdata)
> finalized_stroopdata <- prep(
+            dataset = stroopdata
+            , file_name = NULL
+            , file_path = NULL
+            , id = "subject"
+            , within_vars = c("block", "target_type")
+            , between_vars = c("order")
+            , dvc = "rt"
+            , dvd = "ac"
+            , keep_trials = NULL
+            , drop_vars = c()
+            , keep_trials_dvc = "raw_data$rt > 100 & raw_data$rt < 3000 & raw_data$ac == 1"
+            , keep_trials_dvd = "raw_data$rt > 100 & raw_data$rt < 3000"
+            , id_properties = c()
+            , sd_criterion = c(1, 1.5, 2)
+            , percentiles = c(0.05, 0.25, 0.75, 0.95)
+            , outlier_removal = 2
+            , keep_trials_outlier = "raw_data$ac == 1"
+            , decimal_places = 0
+            , notification = TRUE
+            , dm = c()
+            , save_results = FALSE
+            , results_name = "results.txt"
+            , results_path = NULL
+            , save_summary = FALSE
+          )
raw_data has 5400 observations and 10 variables
  subject block age gender order font_size trial_num target_type   rt ac
1    5020     1  24      2     1        12         1           1  677  1
2    5020     1  24      2     1        12         2           1  538  1
3    5020     1  24      2     1        12         3           1  507  1
4    5020     1  24      2     1        12         4           1 2818  1
5    5020     1  24      2     1        12         5           1  582  1
6    5020     1  24      2     1        12         6           1  498  1
Found 1 between-subjects independent variable: order
Calculating between-subjects independent variables
Giving names for between-subjects variables
Finished between-subjects independent variables
Found 2 within-subject independent variables
within_condition column was added to raw_data
  subject block age gender order font_size trial_num target_type   rt ac
1    5020     1  24      2     1        12         1           1  677  1
2    5020     1  24      2     1        12         2           1  538  1
3    5020     1  24      2     1        12         3           1  507  1
4    5020     1  24      2     1        12         4           1 2818  1
5    5020     1  24      2     1        12         5           1  582  1
6    5020     1  24      2     1        12         6           1  498  1
  within_condition
1              1_1
2              1_1
3              1_1
4              1_1
5              1_1
6              1_1
Finished within_condition column
Found dvc data
Creating data frame named raw_data_dvc for dvc data
Keeping trials according to keep_trials_dvc and deleting unnecessary trials in raw_data_dvc
All further calculations on dvc except outlier removal procedures will be done on the remaining trials
raw_data_dvc has 5260 observations and 11 variables
  subject block age gender order font_size trial_num target_type   rt ac
1    5020     1  24      2     1        12         1           1  677  1
2    5020     1  24      2     1        12         2           1  538  1
3    5020     1  24      2     1        12         3           1  507  1
4    5020     1  24      2     1        12         4           1 2818  1
5    5020     1  24      2     1        12         5           1  582  1
6    5020     1  24      2     1        12         6           1  498  1
  within_condition
1              1_1
2              1_1
3              1_1
4              1_1
5              1_1
6              1_1
Found dvd data
Creating data frame named raw_data_dvd for dvd data
Keeping trials according to keep_trials_dvd and deleting unnecessary trials in raw_data_dvd
All further calculations on dvd will be done on the remaining trials
raw_data_dvd has 5356 observations and 11 variables
  subject block age gender order font_size trial_num target_type   rt ac
1    5020     1  24      2     1        12         1           1  677  1
2    5020     1  24      2     1        12         2           1  538  1
3    5020     1  24      2     1        12         3           1  507  1
4    5020     1  24      2     1        12         4           1 2818  1
5    5020     1  24      2     1        12         5           1  582  1
6    5020     1  24      2     1        12         6           1  498  1
  within_condition
1              1_1
2              1_1
3              1_1
4              1_1
5              1_1
6              1_1
Your design is a mixed design (i.e., includes both between-subjects and within-subjects independent variables
Calculating mean dvc by id by within_condition
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: prep ... tryCatch -> tryCatchList -> tryCatchOne -> <Anonymous>
Execution halted