Hi Ari,
I think it's because you should load the processing history of the image being processed. The easier way is to right click (Ctrl + click on OS X) over the image (the main view or the preview, depending on what you want) and select the "Load History Explorer" option. It will then load the processing history of the selected image.
By default, the history explorer is empty and you should select which history should be displayed.
Thanks for your input, it's very valuable to me.
Best regards,
Vicent.