Thank you for these comments, which indeed do clarify what I had done
wrong. "my packages" indeed should read "all packages". So the next
tome I certainly will t save the names of all contributed packages, and
reinstall those.
I really appreciate the support and patience that helped me to fix what
I messed up by bein too naive.
Best,
Karl Schilling
On 28.05.2026 18:31, Duncan Murdoch wrote:
On 2026-05-27 12:01 p.m., Karl Schilling wrote:
I am running R under Windows 11. recently updated R to the 4.6patchhed
version. I then copied my packages from my previous version (4.5) to the
library of 4.6. Then I updated all packages.
You don't say exactly what you mean by "my packages". If you copy
*all* R 4.5 packages to the default R 4.6 library directory, you will
probably damage R beyond repair. You need to remember that packages
with priority "base" contain code that implements R internals. Trying
to use R 4.5 internals in R 4.6 will cause a lot of problems.
If you only copy contributed packages (i.e. ones that you installed
which get priority NA, or recommended packages) then what you did
might work, but it's safest to just save the names of all contributed
packages, and reinstall those.>
Since then, I see the following behavior:
Each time I run "update.packages(ask='graphics',checkBuilt=TRUE)" I am
asked TWICE
"--- Please select a CRAN mirror for use in this session ---".
And, more embarrassingly, all my Cran and Bioconductor are said to
require an update. That also happens when I run "update.packages", say,
one hour after my last update.
I think others have pointed out that every contributed package *does*
need an update when going from R 4.5.* to R 4.6.*. You can only get
away with keeping installed copies of packages when you stay within
the same minor version number, e.g. 4.6.1 to 4.6.2.
Duncan Murdoch
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