I'm trying to trace a vulnerable application while it is being exploited. I'm testing it on the application and exploit pair found at (https://www.exploit-db.com/exploits/36826). the exploit works fine without having the debugger attached. Then when attaching the debugger, and configuring the debugging options to ignore memory access violation the immunity debugger is not able to trace the application. It produces an error that it cannot read the contents of memory address  (which is the equivalent of AAAA - a piece of the payload). I don't understand why the ImmunityDebugger is failing in tracing the application and appreciate if anyone can help me out.