I lost SL about a month ago when older viewers were disallowed.I have a IMac os10 2 yrs old. I then downloaded MOS sierra and n0 difference,. I deleted all SL viewers, all applications, and did a clean sweep. Work times 2 but avatar not right. Inventory unuseable. Oh yes downloaded a fresh sL viewer. I have been in SL for 9 years and am so depressed. I do not think the creators told us that Macs do not work with this new viewer. I have tried other alternate viewers support guided me to. I think only PC's work. I too need help with a fix on my Mac. If anyone can help, would help all of SL. with love, cleome jewell