I missed an application deadline, but it wasn't entirely my fault. How can I still be considered?
I would try and personally contact someone at the school, like @gerrit commented, call them. Try and explain your situation, and say that you hope you will still be considered for the program. Do mention that it was not that you simply forgot the deadline, but that an official document stated the wrong date and include this piece of evidence. Stress that you are very enthusiastic about the program, and that you would be disappointed if this communication error would prevent you from having a chance to enter the program.