How to understand Crash Log of iPhone?

The problem arises in the method numTiles of FlowCoverView. You can look in there. Apparently it's an unknown selector sent to an object, as it fails in a objc_msgSend_....

Have a look at Session 317 from the WWDC 10 videos. http://developer.apple.com/videos/wwdc/2010.

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.