First off, let me just say that I am a new macbook user, just switched over from a PC to a mac last month. I downloaded something for Photo Booth that adds 30 something more effects to Photo Booth. The problem is this; when I go to take a photo, it will work fine but only if it's on the 'normal' setting. When I try to use any of the new effects such as "Thermal Effect", "Glow", "Pop Art", ect, ect Photo Booth just crashes on me. Is there anyway I can fix this? I know I can uninstall and reinstall Photo Booth but I do not have the CDs that came with my Macbook as this was a gift and was not given the CDs. Can I somehow just uninstall the program that I installed? Is there any other option? Thank you for your time.