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ever since I reinstalled my computer after some updates and tried to install FSelector and it failed, I am getting this error whenever I try to download or install a package:

> install.packages("FSelector")
WARNING: Rtools is required to build R packages but is not currently installed. Please download and install the appropriate version of Rtools before proceeding:

https://cran.rstudio.com/bin/windows/Rtools/
Installing package into ‘C:/Users/myName/AppData/Local/R/win-library/4.4’
(as ‘lib’ is unspecified)
trying URL 'https://cran.rstudio.com/bin/windows/contrib/4.4/FSelector_0.34.zip'
Content type 'application/zip' length 96270 bytes (94 KB)
downloaded 94 KB

package ‘FSelector’ successfully unpacked and MD5 sums checked

The downloaded binary packages are in
    C:\Users\myName\AppData\Local\Temp\Rtmp6rtkGH\downloaded_packages
Error in h(simpleError(msg, call)) : 
  error in evaluating the argument 'x' in selecting a method for function 'which': argument "lst" is missing, with no default
Error in h(simpleError(msg, call)) : 
  error in evaluating the argument 'x' in selecting a method for function 'which': argument "lst" is missing, with no default
Improve this question
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  • 2
    Have you installed RTools as the first line directs? Commented Oct 6 at 18:00
  • yes. search-ms:displayname=Search%20Results%20in%20Home&crumb=location:%3A%3A{F874310E-B6B7-47DC-BC84-B9E6B38F5903}\Rtools 4.5 >>> but it doesn't recognize it > library(Rtools) Error in library(Rtools) : there is no package called ‘Rtools’ Commented Oct 6 at 18:07
  • >>> I try to reinstall Rtools and get this install loop: > install.packages("Rtools") WARNING: Rtools is required to build R packages but is not currently installed. Please download and install the appropriate version of Rtools before proceeding: even though it's in downloads: rtools45-6608-6492(1) Commented Oct 6 at 18:07
  • Sometimes I get this: > library(FSelector) Error: package or namespace load failed for ‘FSelector’: .onLoad failed in loadNamespace() for 'rJava', details: call: fun(libname, pkgname) error: JAVA_HOME cannot be determined from the Registry In addition: Warning message: package ‘FSelector’ was built under R version 4.4.3 Commented Oct 6 at 18:23
  • 4
    RTools is not an R package. You cannot run install.packages("Rtools") You need to download and install from here: cran.r-project.org/bin/windows/Rtools Commented Oct 6 at 18:52
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