Lately R version 4.1.0 was released on CRAN (see https://cran.r-project.org).
The MacOS version was one day late. But yesterday it was released, too. So I wanted to test the new version without being able to go back. “No problem”, I thought “I’m already using RSwitch”. RSwitch is a tiny Mac program which allows you to switch between installed R versions.
But unfornately RSwitch told me that R version 4.0.5 was incomplete after I’ve installed version 4.1.0.