I have been running all different types of viewers on imac without any problems, until I downloaded a program called sunflowerbed to help me with backing tracks when I stream media. It didnt work and I uninstalled it and lo.......I cant get any viewer to open. The icon bounces a couple of times and disappears. the strange thing is that I cant open my sound preferences icon without that crashing as well. I have reinstalled lion and even sent it to the repair shop for reformatting (although I have my serious doubts tht they did it and just ripped me off. Any ideas anyone? REgards Beejay