Debug doesn't show code crash point

Question

I used to debug an application some time ago and when it crashed it would interrupt on the crash file code part location, Lately when debugging it, it crashes, but when it interrupting it only show the disassembler, is it some configuration? I'm using visual studio 2003 (also it says the fault address is 0x00000000)

Answer 1

Possible reasons:

A. The debugger didn't find the PDB for the module which is crashed, because:

1) It is a release build.

2) The crash is in a system DLL.

B. The memory is corrupted so badly that the debugger is unable to analyze the call stack.