[Building Sakai] Intermittent 0-size attachments in Tests & Quizzes

[Stephen Jaegle]

Hi:

We are presently running version 2.5.4. We have a situation in one class
where, when following the "Scores" link for an assessment, then clicking on
the student name, and then on the name of an attachment file uploaded by a
student, the file sometimes is downloaded as a file of zero bytes in size,
and at other times as "full-size" download. One example is a file that was
uploaded as an attachment as an answer to an exam question, downloaded and
commented upon by the instructor, with the comment now showing, but further
attempts to download the file seem to yield a file of 0 size again. Users
report seeing the same attachments as successfully downloadable at times and
0-byte sized at others, though I have been unable thus to duplicate the
entire sequence precisely, i.e., downloadable, 0-byte, downloadable again.

At the moment, we have about 10 files that are turning up consistently as
0-byte. Does anyone have any advice on how we can recover the attachments?

More broadly, has anyone encountered behavior similar to that described
above?

Thanks,

Steve
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