Some Loading 9% problem :)

I would like to give some feedback about Network Attack Puzzle

First of all thank you for your job! This project is the best gamification i've ever seen and it inspire me in my way of learning programming (which is rly hard but unbelievably interesting for me) :) I tried to solve "Network Attack Puzzle" and smth went wrong. System crashes while checkin' my solution (don't know why, there is no "You are wrong!" messange, etc. Only Loading 9% and Loading 9% and, u know, Loading 9% :)). It seems that it's not my connection problem, can u help me, please?

Thanks a lot!

From: http://www.checkio.org/mission/network-attack/solve/

HTTP_USER_AGENT:

Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.81 Safari/537.36