Does he have the ability of running code inside debugger and give you a backtrace ? (I don't remember well, but IIRC windows has some kind of just-in-time debugger that can do it...).
Does he have the ability of running code inside debugger and give you a backtrace ? (I don't remember well, but IIRC windows has some kind of just-in-time debugger that can do it...).