When I access my pictures within the photos app on my Windows 8 Pro computer, a error message “All your photo sources are hidden. To show some, change your setting.” shows up. But I was able to view photos without any issues. I have just switch from Windows Xp to win8.
You have to unhide the sources for the photo app by the step by step bolew:
* First open Photo app from start screen.
* Use your finger or mouse cursor to sweep in slightly from the right side of the screen. And the Charms bar will come up. Or press Windows + C key.
* Select Settings > Options. You should see some choices for showing photos and videos from various places. Go to check the box with the ones you want to display, such as “picture library”, “sky drive” and “see your photos”.