Difficulty installing readxl

[doclaurence]

Hi all. I am new to r. I have R studio version 1.3.1073 installed on my mac and I am trying to install readxl. I keep getting the following error message:

library(readxl)
Error: package or namespace load failed for ‘readxl’ in dyn.load(file, DLLpath = DLLpath, ...):
unable to load shared object '/Library/Frameworks/R.framework/Versions/4.0/Resources/library/Rcpp/libs/Rcpp.so':
dlopen(/Library/Frameworks/R.framework/Versions/4.0/Resources/library/Rcpp/libs/Rcpp.so, 6): Symbol not found: _EXTPTR_PTR
Referenced from: /Library/Frameworks/R.framework/Versions/4.0/Resources/library/Rcpp/libs/Rcpp.so
Expected in: /Library/Frameworks/R.framework/Resources/lib/libR.dylib
in /Library/Frameworks/R.framework/Versions/4.0/Resources/library/Rcpp/libs/Rcpp.so
In addition: Warning message:
package ‘readxl’ was built under R version 4.0.2
I have tried installing the package in a fresh session multiple times and uninstalling R studio and re-installing, but can't seem to get around the error message and am unable to import any excel files. Can anyone please help? Thanks in advance!

[technocrat]

@doclaurence

unable to load shared object '/Library/Frameworks/R.framework/Versions/4.0/Resources/library/Rcpp/libs/Rcpp.so

indicates

install.packages("Rcpp")

If you are offered the choice to install a later version from source, choose "No."

[doclaurence]

Thank you for the quick reply!

Unfortunately when I install Rcpp, I get a similar error message:

library(Rcpp)
Error: package or namespace load failed for ‘Rcpp’ in dyn.load(file, DLLpath = DLLpath, ...):
unable to load shared object '/Library/Frameworks/R.framework/Versions/4.0/Resources/library/Rcpp/libs/Rcpp.so':
dlopen(/Library/Frameworks/R.framework/Versions/4.0/Resources/library/Rcpp/libs/Rcpp.so, 6): Symbol not found: _EXTPTR_PTR
Referenced from: /Library/Frameworks/R.framework/Versions/4.0/Resources/library/Rcpp/libs/Rcpp.so
Expected in: /Library/Frameworks/R.framework/Resources/lib/libR.dylib
in /Library/Frameworks/R.framework/Versions/4.0/Resources/library/Rcpp/libs/Rcpp.so
In addition: Warning message:
package ‘Rcpp’ was built under R version 4.0.2
Any thoughts?

[andresrcs]

It seems to be an issue with the CRAN version of Rcpp for MacOS systems, can you try installing this way?

install.packages("Rcpp", repos="https://rcppcore.github.io/drat")

This is the GitHub issue for reference

Many packages are broken on Mac with CRAN version of Rcpp -- unless 10.11 SDK is used as on CRAN

[doclaurence]

Thank you very much I can confirm that this method has worked.