recentf prevents closing emacs

[Haines Brown]

I recently upgraded emacs to version 27.1 (build 1, 
x86_64-pc-linux-gnu, GTK+ Version 3.24.30, cairo version 1.16.0) of 
2021-11-27, modified by Debian. I did so while an emacs session was 
running. Now I cannot shut emacs down:

  C-x C-c
  Buffer recentf modified; kill anyway (yes or no)
  [I say yes]
  Cannot open load file: No such file or directory, warnings

There is in fact a ~/emacs.d/recentf file owned by user and writable.
Perhaps the upgrade changed where files are by default located.

Another anomaly: I open calandar by pressing the F5 key. Now that key 
instead seems to split the winow vertically and calenar fails to open.

I find this: /iusr/share/emacs/28.q/lisp/calandar. Does this clash 
with the version of the emacs actually running, which i 27.1? 
  
-- 

     Haines Brown 
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