Released to anonymous gives 500 error

Verified in http://nightly2.sakaiproject.org:8082/portal/ with http://nightly2.sakaiproject.org:8082/samigo-app/servlet/Login?id=b6ae4362-aeb2-4093-88f0-fbcdc6c7d5141351780007547 logged on as ow_student_1

Committed Yuki's patch in r114745

The problem is also occurring for assessments that do not allow a late submission and the student attempts to take the test by URL. I tested the following scenarios on http://nightly2.sakaiproject.org:8082/portal
Sakai Revision: 114384 (Kernel 1.4.0-SNAPSHOT)- Server sakai-nightly.uits.iupui.edu

"SAM-1591" and "SAM-1591C", both of which allow late submissions gave the 500 error.

- timed, late allowed
http://nightly2.sakaiproject.org:8082/samigo-app/servlet/Login?id=ad0f919a-08db-482f-9b37-4c2fefd293421350397633746
500 error

SAM-1591A - timed, late not allowed
http://nightly2.sakaiproject.org:8082/samigo-app/servlet/Login?id=ad0f919a-08db-482f-9b37-4c2fefd293421350397744915
Late Submission not allowed message

SAM-1591B - untimed, late not allowed
http://nightly2.sakaiproject.org:8082/samigo-app/servlet/Login?id=ad0f919a-08db-482f-9b37-4c2fefd293421350397797805
Late Submission not allowed message

SAM-1591C - untimed, late allowed
http://nightly2.sakaiproject.org:8082/samigo-app/servlet/Login?id=ad0f919a-08db-482f-9b37-4c2fefd293421350397843366
Clicked Begin button - 500 error

I created a patch to fix this issue.
I think that it should be fixed as soon as possible because it might confuse QA workflow for Sakai 2.9.

It has occurred since the fix via SAM-1368. Currently, because the fix is not merged into Sakai 2.9, it is not occurring in 2.9.