by Rajneel Totaram.
We have the same issue on our Moodle 2.2 install.
Apparently the TII plugin is not able to identify the files from the $eventdata->files object (in /plagiarism/turnitin/lib.php).
I see that this seems to be fixed in the Moodle 2.3 version of the plugin. (See link: https://github.com/danmarsden/moodle-plagiarism_turnitin/pull/30/files).
Hopefully this works as expected when we begin our testing later this month.
It should be possible to fix the 2.2 code to get this to work.
Thanks,...RT