Ok, so here's what happens... I have a picture that I would like to open from my desktop, but when I double click on it nothing happens. After I double click on it, I see at the top left where it says "Finder" flickers, and it says "Preview" for a split second, then goes back to "Finder". I went into my hard drive, and found the application "Preview", and tried opening it. The same thing happens as before. What do I do to get the application to work?