I'm not sure why, but as of yesterday SL viewer randomly began freezing and then coming up with an error. I have an IBM Lenovo desktop computer with 2GB of Ram and more than enough Harddrive space (more than 500GB) and SL viewer was working perfectly fine up until this point. I've tried using other viewers but they either don't work or they lag too badly to be usable. I've also tried clearing caches and re-installing several times but nothing seems to work.