Turnitin patch was working fine on both versions: 1.9.4 and 1.9.5. it suddenly stopped working and i saw this error message in the cron
"sending Turnitin files
<br />
<b>Fatal error</b>: Uncaught exception 'Exception' with message 'String could not be parsed as XML' in /web/moodle195/lib/turnitinlib.php:200
Stack trace:
#0 /web/moodle195/lib/turnitinlib.php(200): SimpleXMLElement->__construct('')
#1 /web/moodle195/lib/turnitinlib.php(222): tii_post_data(Array)
#2 /web/moodle195/lib/turnitinlib.php(372): tii_post_to_api(Array, 41, 'POST', '', false, true)
#3 /web/moodle195/admin/cron.php(141): tii_send_files()
#4

thrown in <b>/web/moodle195/lib/turnitinlib.php</b> on line <b>200</b><br />"

in the 1.9.5 instance the turnitin plugin stopped working and all entries are pending in the mdl_tii_files table

in 1.9.4 only 2 entries are pending in the table while new entries get processed even though the error is still being displayed.