Program received signal EXC_BAD_ACCESS in Xcode?

It's a memory issue it happens when you trying to access an object which is already being released.

EXC_BAD_ACCESS indicate memory issue, you may release object already been released, try enable NSZombie for further information, add NSZombieEnabled to the "Environment Variables" section in scheme settings.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.