I downloaded my LumixLX5 images to a location on my internal hard drive and imported them to Lightroom2. The files showed up in light room's left column, pictures in the center area as I expected. However when I returned to LR after quitting, the files were missing from the left column and I could not access the imported pix. What am I doing wrong? I have used lightroom1 a lot. My computer is a 2006 iMac.