EXC_BAD_ACCESS (code=1, address=0x0) when stepping in debugger

Question

My application crashes each and every time I try to step over a call. Without debugger it works fine.

Also, when I run the app in simulator it woks fine with or wit

Answer 1

Please login developer site and download the Xcode 5.0.2 GM seed, it fixed this bug.
See the release notes.

Update 12-Nov-2013
Xcode 5.0.2 has released, you can download it from Dev Center