Tonight we were forced to do a 2-3 hour revert as there was a major bug found with the new event. We apologize if this set you back any, and we appreciate your guys' patience on this. Zombie Progress has been saved. We tested it quiet well for days before this event, however when you get 200+ people in one event, things tend to popup that just does not happen with 20 people in the event. We know the issue and it will be fixed and i appreciate your patience on this. It is a very large unique system with a lot of variables. The good thing: THERE WAS NO LAG, that is a huge feat for those who remember the previous events. The bad thing: We had to revert in lieu of some skill issues. We will be doing some fun events tomorrow to make up for this error for everyone and will get the Zombie event back on track right away. Again, Thanks for being patient and understanding, things like this happen from time to time, specially when we are implementing new content for everyone there is ALWAYS bound to be bugs. Keeping in mind this is an online game in real time so anything can always happen.