Error in readRDS(file) cannot read workspace version 3 when using multiple R installations

General
7

Hi @mt96,
Not sure if my previous suggestion solved your .RData problem?
Another way to tackle this is to make use of a .Last() function, located in either your .Rprofile or Rprofile.site file, which is the last thing executed before R closes.
See this link for some background
https://www.statmethods.net/interface/customizing.html

In your case this should work, in combination with the redefined quit() (see above):

.Last <- function(){
    save.image(version=2)
    cat("\n.RData file in version=2 format has been saved\n")
    invisible(readline(prompt="Press [enter] to quit"))
}

HTH