Error listing packages, Error in readRDS(pfile): cannot read workspace version 3 written by R 3.6.0

Hello,

I have exactly the same problem than @mafose in this post. As the threat is already closed, but not answer posted, I start a new post.

Since a few days I get the error "Error listing packages" when I start RStudio and in the console the notification "Error in readRDS(pfile): cannot read workspace version 3 written by R 3.6.0; need R 3.5.0 or newer"

RStudio is running in windows on a citirx workspace.

Any idea?
Andreas

What version of R are you running?

The default serialization format for R changed in May 2018, such that new default format (version 3) for workspaces saved can no longer be read by versions of R older than 3.5 (you can see relevant commits in the CRAN mirror below)


R 3.5 was a major update that required new installations of all packages (see post below)

All of which is to say that I would recommend updating your version of R.

Thanks @mara for all links.

We have installed R Version 3.4.0. I will ask our IT department in they can upgrade on 3.5.0 or higher.

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