Error when trying to load a regionDB

[HanneHjorthaug]

Hi,

I would very much like to use LOLA, but I can't get the LOLACore db to load into R. I've tried both the cache and the ordinary db, but they both stop loading with error "Error in .combine_DFrame_rows(x, objects, strict.colnames = FALSE) : the objects to combine must be DFrame objects or derivatives". The same ting happens if I try to load the example db in your gettingStared-vignette:

library("LOLA")
dbPath = system.file("extdata", "hg19", package="LOLA")
regionDB = loadRegionDB(dbPath)
Reading collection annotations:
ucsc_example: found collection annotation:C:/Users/HH/Documents/R/win-library/4.1/LOLA/extdata/hg19/ucsc_example/collection.txt
Reading region annotations...
::Loading cache:: C:/Users/HH/Documents/R/win-library/4.1/LOLA/extdata/hg19/ucsc_example//ucsc_example_files.RData
ucsc_example
::Creating cache:: C:/Users/HH/Documents/R/win-library/4.1/LOLA/extdata/hg19/ucsc_example/ucsc_example.RData
Reading 5 files...
1: C:/Users/HH/Documents/R/win-library/4.1/LOLA/extdata/hg19/ucsc_example/regions/cpgIslandExt.bed
1 ERR:C:/Users/HH/Documents/R/win-library/4.1/LOLA/extdata/hg19/ucsc_example/regions/cpgIslandExt.bed
Error in .combine_DFrame_rows(x, objects, strict.colnames = FALSE) :
the objects to combine must be DFrame objects or derivatives
In addition: Warning message:
In dir.create(cacheDir, recursive = TRUE) :
'C:\Users\HH\Documents\R\win-library\4.1\LOLA\extdata\hg19\ucsc_example' already exists

sessionInfo()
R version 4.1.2 (2021-11-01)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 19044)

Matrix products: default

locale:
[1] LC_COLLATE=Norwegian Bokmål_Norway.1252 LC_CTYPE=Norwegian Bokmål_Norway.1252 LC_MONETARY=Norwegian Bokmål_Norway.1252 LC_NUMERIC=C
[5] LC_TIME=Norwegian Bokmål_Norway.1252

attached base packages:
[1] stats graphics grDevices utils datasets methods base

other attached packages:
[1] LOLA_1.19.1

loaded via a namespace (and not attached):
[1] xfun_0.30 remotes_2.4.2 reshape2_1.4.4 purrr_1.0.1 vctrs_0.5.2 miniUI_0.1.1.1 usethis_2.1.6
[8] htmltools_0.5.2 stats4_4.1.2 yaml_2.2.1 rlang_1.0.6 pkgbuild_1.3.1 urlchecker_1.0.1 later_1.2.0
[15] glue_1.6.2 withr_2.5.0 BiocGenerics_0.40.0 sessioninfo_1.2.2 plyr_1.8.6 GenomeInfoDbData_1.2.7 lifecycle_1.0.3
[22] zlibbioc_1.36.0 stringr_1.5.0 devtools_2.4.4 htmlwidgets_1.5.4 memoise_2.0.1 evaluate_0.16 knitr_1.40
[29] callr_3.7.2 IRanges_2.28.0 fastmap_1.1.0 httpuv_1.6.1 ps_1.7.1 GenomeInfoDb_1.30.1 curl_4.3.2
[36] simpleCache_0.4.2 Rcpp_1.0.7 xtable_1.8-4 promises_1.2.0.1 cachem_1.0.6 writexl_1.4.2 S4Vectors_0.32.3
[43] pkgload_1.3.0 XVector_0.30.0 mime_0.10 fs_1.5.2 digest_0.6.27 stringi_1.5.3 processx_3.7.0
[50] shiny_1.7.2 GenomicRanges_1.42.0 cli_3.4.1 tools_4.1.2 bitops_1.0-7 magrittr_2.0.1 RCurl_1.98-1.3
[57] profvis_0.3.7 crayon_1.5.2 ellipsis_0.3.2 data.table_1.14.0 prettyunits_1.1.1 rmarkdown_2.16 rstudioapi_0.14
[64] R6_2.5.1 compiler_4.1.2

Do you have any suggestions as to how this problem can be solved?.
For the record, I am using Windows.

Kind regards,
Hanne