I performed the sequence described above. For my daughter's account, error message (-60) then gthumb photo import (her default action) is started. For my account, same result as above (error, 2 dialogues); for guest, same (error, 2 dialogues).
In all cases, despite error messages and extra dialogues, photo import works fine.
I do not believe I made any other changes to the system, but now I am doubting myself.
As for the command output you requested,
$ gphoto2 --summary
The program 'gphoto2' is currently not installed. You can install it by typing:
sudo apt-get install gphoto2
bash: gphoto2: command not found
I performed the sequence described above. For my daughter's account, error message (-60) then gthumb photo import (her default action) is started. For my account, same result as above (error, 2 dialogues); for guest, same (error, 2 dialogues).
In all cases, despite error messages and extra dialogues, photo import works fine.
I do not believe I made any other changes to the system, but now I am doubting myself.
As for the command output you requested,
$ gphoto2 --summary
The program 'gphoto2' is currently not installed. You can install it by typing:
sudo apt-get install gphoto2
bash: gphoto2: command not found
The output of gvfs-mount -li is attached.