Trouble reading micro data

Sorry for the query! I am experiencing some trouble reading micro-data with the ipums package!

Here is my session info:

- Session info -----------------------------------------------------------------------------------
 setting  value                       
 version  R version 4.1.0 (2021-05-18)
 os       Windows 10 x64              
 system   x86_64, mingw32             
 ui       RStudio                     
 language (EN)                        
 collate  English_United Kingdom.1252 
 ctype    English_United Kingdom.1252 
 tz       Europe/London               
 date     2021-07-23                  

- Packages ---------------------------------------------------------------------------------------
 package     * version date       lib source        
 assertthat    0.2.1   2019-03-21 [1] CRAN (R 4.1.0)
 cachem        1.0.5   2021-05-15 [1] CRAN (R 4.1.0)
 callr         3.7.0   2021-04-20 [1] CRAN (R 4.1.0)
 cli           2.5.0   2021-04-26 [1] CRAN (R 4.1.0)
 crayon        1.4.1   2021-02-08 [1] CRAN (R 4.1.0)
 DBI           1.1.1   2021-01-15 [1] CRAN (R 4.1.0)
 desc          1.3.0   2021-03-05 [1] CRAN (R 4.1.0)
 devtools      2.4.2   2021-06-07 [1] CRAN (R 4.1.0)
 dplyr         1.0.7   2021-06-18 [1] CRAN (R 4.1.0)
 ellipsis      0.3.2   2021-04-29 [1] CRAN (R 4.1.0)
 fansi         0.5.0   2021-05-25 [1] CRAN (R 4.1.0)
 fastmap       1.1.0   2021-01-25 [1] CRAN (R 4.1.0)
 forcats       0.5.1   2021-01-27 [1] CRAN (R 4.1.0)
 fs            1.5.0   2020-07-31 [1] CRAN (R 4.1.0)
 generics      0.1.0   2020-10-31 [1] CRAN (R 4.1.0)
 glue          1.4.2   2020-08-27 [1] CRAN (R 4.1.0)
 haven         2.4.1   2021-04-23 [1] CRAN (R 4.1.0)
 hms           1.1.0   2021-05-17 [1] CRAN (R 4.1.0)
 ipumsr      * 0.4.5   2020-07-21 [1] CRAN (R 4.1.0)
 lifecycle     1.0.0   2021-02-15 [1] CRAN (R 4.1.0)
 magrittr    * 2.0.1   2020-11-17 [1] CRAN (R 4.1.0)
 memoise       2.0.0   2021-01-26 [1] CRAN (R 4.1.0)
 pillar        1.6.1   2021-05-16 [1] CRAN (R 4.1.0)
 pkgbuild      1.2.0   2020-12-15 [1] CRAN (R 4.1.0)
 pkgconfig     2.0.3   2019-09-22 [1] CRAN (R 4.1.0)
 pkgload       1.2.1   2021-04-06 [1] CRAN (R 4.1.0)
 prettyunits   1.1.1   2020-01-24 [1] CRAN (R 4.1.0)
 processx      3.5.2   2021-04-30 [1] CRAN (R 4.1.0)
 ps            1.6.0   2021-02-28 [1] CRAN (R 4.1.0)
 purrr         0.3.4   2020-04-17 [1] CRAN (R 4.1.0)
 R6            2.5.0   2020-10-28 [1] CRAN (R 4.1.0)
 remotes       2.4.0   2021-06-02 [1] CRAN (R 4.1.0)
 rlang         0.4.11  2021-04-30 [1] CRAN (R 4.1.0)
 rprojroot     2.0.2   2020-11-15 [1] CRAN (R 4.1.0)
 rstudioapi    0.13    2020-11-12 [1] CRAN (R 4.1.0)
 sessioninfo   1.1.1   2018-11-05 [1] CRAN (R 4.1.0)
 testthat      3.0.3   2021-06-16 [1] CRAN (R 4.1.0)
 tibble        3.1.2   2021-05-16 [1] CRAN (R 4.1.0)
 tidyselect    1.1.1   2021-04-30 [1] CRAN (R 4.1.0)
 usethis       2.0.1   2021-02-10 [1] CRAN (R 4.1.0)
 utf8          1.2.1   2021-03-12 [1] CRAN (R 4.1.0)
 vctrs         0.3.8   2021-04-29 [1] CRAN (R 4.1.0)
 withr         2.4.2   2021-04-18 [1] CRAN (R 4.1.0)
 zeallot       0.1.0   2018-01-28 [1] CRAN (R 4.1.0)

[1] C:/Users/lgorman/Documents/R/win-library/4.1
[2] C:/Program Files/R/R-4.1.0/library

I am following the example provided in the introduction. I installed the packages. At first I had issues trying to access my data extract, so I decided to run the basic example from the introduction:

cps_ddi <- read_ipums_ddi(ipums_example("cps_00006.xml"))
cps_data <- read_ipums_micro(cps_ddi,verbose = FALSE)

The first line runs fine and gives the following information when viewed in the console:

> cps_ddi
An IPUMS DDI for IPUMS-CPS with 8 variables
Extract 'cps_00006.dat' created on 2017-08-02
User notes:  User-provided description: Minimal test extract
  Samples: 1962, 1963
  Variables: STATEFIP, INCTOT (automatically Year, SERIAL, HWTSUPP, MONTH,
  WTSUPP)
  Select Cases: State - Minnesota, Iowa, Wisconsin, South Dakota, North Dakota

However the second line gives the following error:

Error in inDL(x, as.logical(local), as.logical(now), ...) : 
  function 'Rcpp_precious_remove' not provided by package 'Rcpp'

Interestingly, when I run the second line again, I get no error. The command simply never finishes running. I waited 20 mins for this to finish but it did not happen. I am wondering whether it is normal that it takes this long?

Any guidance would be really appreciated :). Please let me know if you need any further information!

mnpopcenter / ipumsr

Trouble reading micro data #70