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Hi,
I was wondering why it takes so long to get a quiz-report. It was the picture that overviewgraph.php draws. There is a division by zero in line 60:
$bandwidth = $quiz->grade / $bands;
because $bands is by default zero.
Even when I change maxgrade by hand - I have to do it twice at first time.
After that, there's no division by zero and everything works fine!
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