You are an experienced programmer and have a problem with the engine, shaders, or advanced effects? Here you'll get answers. No questions about C++ programming or topics which are answered in the tutorials!
Are you sure you have the right path. That error is usually caused by trying to manipulate a pointer that has a NULL value. Null values are normally caused by files that weren't accessed correctly. Check your path.
The Robomaniac
Project Head / Lead Programmer Centaur Force
did you put the model in the same folder the sydney model was in? if not change the path. You can try checking if the model loaded before you try and use the point to it in order to prevent a crash.