shanerjedi said:
The Emperor arrives on the DS and tells Vader: "In time he will seek you out. And when he does you must bring him before me."

In the next scene with these two Palps tells Vader that Luke will come to him and Vader says: "He will come to me?".

Wait a minute. You were just told he would come to you in the arrival scene. What the heck is Vader talking about?

Vader's pretty distracted in the landing scene "I sense you wish to continue your search for young Skywalker", remember?