Let me re-post my question. Let's say I have 50 photos in a folder on picasa. I pick 20 photos out of the folder and export to desktop. Once the folder is on desktop I open the folder on desktop. Now I am able to see 20 files of the photos in the folder but it only shows small horizontal line and a file name. All the photos are there but instead of small thumbnail or medium thumbnail it all shows up as a small horizontal line. In the past I was able to see them either small, medium, large of extra large under view option. Something has happened in my system which only displays line in the folder once the photos are exported from Picasa.