After installing the new update of Traktor Pro 4 discover that: Right click on a playlist and Select as Preparation List. After that went to the music folder where I want to add it to the list and nothing happened as before. The Track did not went to the specific playlist. Now I have to drag and drop the track to the specific playlist. Also I went to load the previous version of Traktor and everything worked fine. In this version I have this problem. Is anyone else experiencing the same problem???