Hi,
What other message? Can you reference it?
I have been watching this again and again, I can't really see how I can explain it otherwise.
At what point do you start having trouble?
What is buggy? can you explain your problem, are you getting an error, are getting confused with a particular concept or section?
Can you do a screencast showing where you are and what you don't understand?then I'll be able to better answer and solve your issue.
Bye,
Jean