Cannot exclude grades from any but first assignment; cannot exclude from multiple assignments

Problem with grade exceptions, Moodle 1.8.2 GBv2

I am using the patch uploaded around July 23, 2007 on this system (1.8.1 system)

I have a class with 5 students and 44 assignments.

First problem:

when I go to the grade exceptions screen, I
select a student who is third in the list
select the third assignment in the list
click "exclude from grading" and the third student is excluded from the first assignment in the list.

Second problem:
when I exclude a student from a single assignment (which works only when it is the FIRST assignment!), I can't get the screen to refresh so that I can exclude students from a different assignment. Even if I click on a different tab and come back, I can not start excluding for a second assignment.

Big trouble!

Related discussion:
http://moodle.org/mod/forum/discuss.php?d=71428