Mine started making noises again after a couple of weeks.
Yesterday i went to the local dealer and it turned out, that they had seen the problem a hundred times before.
It disappeared when i opened the windows just 1 cm. So i thought that was where the problem was ( between door and window ). But it comes from the felt seals at the top of the doors.
When the windos are closed firmly, they create a little extra pressure on the top of the door which is transmitted to the felt seals. When the seals get dry from rain, dust, etc. they loose the ability to slide smoothly.
One touch of a spunge with vinyl dressing ( for outside parts ) erased the creaking right there. It took one minute. Such a joy. It has been driving me nuts.
I know my explanation is a mess
Let me know, if you want a picture.