Hi there,

I got the following error message when trying to load the mzR package. Please help. Thank you in advance.

Input:

if (!requireNamespace("BiocManager", quietly = TRUE))
    install.packages("BiocManager")

BiocManager::install("mzR")
library(mzR)

Output:

Loading required package: Rcpp
Warning message:
In fun(libname, pkgname) :
  mzR has been built against a different Rcpp version (1.0.5)
than is installed on your system (1.0.6). This might lead to errors
when loading mzR. If you encounter such issues, please send a report,
including the output of sessionInfo() to the Bioc support forum at 
https://support.bioconductor.org/. For details see also
https://github.com/sneumann/mzR/wiki/mzR-Rcpp-compiler-linker-issue.

Output sessionInfo:

R version 4.0.4 (2021-02-15)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 19042)

Matrix products: default

locale:
[1] LC_COLLATE=English_United Kingdom.1252  LC_CTYPE=English_United Kingdom.1252   
[3] LC_MONETARY=English_United Kingdom.1252 LC_NUMERIC=C                           
[5] LC_TIME=English_United Kingdom.1252    

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

other attached packages:
[1] mzR_2.24.1 Rcpp_1.0.6

loaded via a namespace (and not attached):
[1] BiocManager_1.30.10 compiler_4.0.4      ProtGenerics_1.22.0 parallel_4.0.4      tools_4.0.4        
[6] Biobase_2.50.0      codetools_0.2-18    ncdf4_1.17          BiocGenerics_0.36.0

Hi Sarah - this isn't an error, it's a message that informs you that the Rcpp version on your computer is different than the one used to build the binary package that you installed. Nowadays, it is harmless and you can simply ignore it (it used to be important many years ago, before Rcpp reached maturity).