Thank you~!! ^_^
Oh, sorry about that!! I received the same question over on Tumblr any someone may found the answer! It turns out you have to rename the folder as 'Traumerei' instead of 'Träumerei'. It's the 'ä' that doesn't seem to read.
ah yess~~~ the problem fixed. thank you (。>﹏<。)(。>﹏<。)