wait how does that happen??
Viewing post in Kit to Leader: 8 Year Anniversary comments
After you kill Firestar and then talk to Breezesong, when you exit the den you see Creamfrost being attacked. Also a few days after you get the prophecy. If you haven't killed Firestar by then you are blocked from progressing because your Clan scatters. Also if you fall in the cliff/ravine thing in the place between highrock and the training grounds, you will die because there is no med cat.