Dear Skim Experts:

Maybe someone can help me with a Skim popup problem.

The computers toot (iMac) and lap (MacBook Pro) are:
macOS Monterey Version 12.6 (up to date)
Skim 1.6.12 (up to date)

On toot there is no problem.  The issue only happens on lap, but I
don't know why.

On lap in the trash directory (~/.Trash) I have a pdf file named a.aw.
(The actual name has a date-time stamp and the file is coming from
another computer but the example below can be done by hand so that is
not relevant.)

cp a.aw a.pdf
open a.pdf
(Skim opens the file.)
cp a.aw a.pdf

Skim OBJECTS with a pop up message:

     The file "a.pdf" couldn't be opened because you don't have 
     permission to view it.

     To view or change permissions, select the item in the Finder and 
     choose File > Get Info.

     OK

I must click OK.

I have full read-write permissions for the files (chmod u+rw *)!  This 
even happens when I give everybody permission (chmod a+rw *)!

I have been doing this kind of move in the Trash for YEARS.
Suddenly it fails on one computer but not on the other.

Normally Skim would update the PDF since I have the Preferences for
Sync to be 'Check for file changes' and 'Reload automatically'.  This
scheme allows me to create a PDF on one computer, transfer it to my
laptop and display the new version.

The problem is apparently not related to the attributes marked by '@'
in the long ls listing.  The attributes can be removed using the 
command "xattr -c *" and this does not prevent the popup.

This does not happen if I work in /tmp or another directory,
only in ~/.Trash

Does anyone have a clue what's going on?

Tom

  Thomas D. Schneider, Ph.D.
  Senior Investigator
  National Institutes of Health
  National Cancer Institute
  Center for Cancer Research
  RNA Biology Laboratory
  Biological Information Theory Group
  Frederick, Maryland  21702-1201
  schne...@mail.nih.gov
  alum.mit.edu/www/toms
  https://alum.mit.edu/www/toms



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