Go to Admin -> Server -> Debugging, and turn on debug mode.
Probably what is happening is that something (memory?) is running out, but an error message telling you what the problem is won't be displaid unless you have debug on.
Once we know exactly what the problem is, there is more chance of being able to help you.
Hardware and performance
Student Can't See Whole Quiz
This discussion has been locked because a year has elapsed since the last post. Please start a new discussion topic.