Hello, I have Lightroom 3 and I'm currently experiencing problems when Importing pictures. Lightroom completely freezes up and will sometimes say that it doesn't recognize the file, but when tried again it will upload a couple of pictures at a time. Now it won't even begin to import any pictures, the screen just totally freezes up. I thought it might have been a corrupted card, so I bought a new card and I had the same problem. It's running on a Mac. Just wondering what I need to do to fix this.