Question: Problem with MapleTA and MathML generation

In a test we had develop at our college, we need to use some MathML expressions on the questions, for example: to verify if an student know the sine law I use:
mode=Multiple Choice@ name=sine@ editing=useHTML@ @ answer=1@ choice.1= @ choice.2=@ choice.3=@ choice.4=@
Well, the problem was that at the moment of the exam, not all of the images were generated, it was very annoying when the correct answer didn't appear. I wanna know if that has happened at somebody else (then was a problem with MapleTA or apache server) or it's just at my college (then it's a problem with the network). Thanks to anybody who reads this, i will be waiting for an answer.
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