Error regarding Matrix package

General
1

I have a problem regarding the lmer and glmer functions in Rstudio. An error appears when I use the functions:

Error in initializePtr() :
function 'cholmod_factor_ldetA' not provided by package 'Matrix'

When I use install.packages(“Matrix”) a pop-up appears that keeps telling me to restart R but does nothing. I have installed the newest R and Rstudio versions as wel as the Rtools.
Could anyone help me?

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2

Try selecting the menu Session -> Restart R and then running install.packages("Matrix").
An alternative is to run R on its own, without using RStudio, and running install.packages("Matrix") there.

3

Hi, restarting the session and installing the package does not seem to work.
Using lmer or glmer leads back to the error:
Error in initializePtr() :
function 'cholmod_factor_ldetA' not provided by package 'Matrix'

4

This StackOverflow thread

says that you need to reinstall both lme4 and Matrix from CRAN. Please read that thread and see if that solution works for you.

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5

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