I have done that now. But my app still force closing

Here is what my debugger says:
Picture is at www.tinypic.com

Just ignore the line that says something about binary XMl file, I've fixed that one. Thanks!

I think at this stage of the game you should post the current source code as trying to guess what is going on from just the debugger output is a bit of a long shot. It is dificult to just ignore the bit about the binary XML file in the output when it has been fixed and the output may be showing something totally different.

As another idea maybe you should just totally scrap what you have so far and start again typing exactly what is in the book (or using the online source code) and once it is running then try changing the variable names and generally modifying the code to do what you want. Just an idea.