Cairo Dock won't open folders
 

Hi. I installed Cairo-Dock, and finally figured out how to make folder contents to appear on mouse hover. However, I can't open the folders that appear unless I have the folder on the desktop. In the pictures that I have attached, I have the home folder on the dock. In the picture without an open window, I don't have the home folder on the desktop. But in the picture with the open window, I had the home on the desktop. How can I fix this?

I've the some problem so not open thunar but audacious