Hi, I have macbook retina. OS X 10.8.2 When I try to save an image off a website it comes up with a pop up box and makes me choose preview document or all files. It has preview document as default. Using this default when I save a picture on desktop... there is no preview icon. The desktop icon for the picture is a blank white. Of course when I click on it, it opens and I can see the picture, but the desktop icon is a plain white and I have no idea what the picture looks like without opening it. If I click on "all files", than 50% of the time the desktop icon works and I can see the picture on the desktop icon, than the other 50% of the time it doesn't work. Unlike Safari, I click just right click, than save as, and (1) it doesn't have an annoying pop up, with the wrong default and (2) it works 100% of the time. How do I make it to where pictures are automatically saved on desktop and I can view the picture on the desktop icon, without having to open the picture file