An issue has emerged trying to use the Second Life Viewer on Mac systems running OS X 10.8 Mountain Lion.

Notification of the issue has been posted to the Grid Status Page, which reads:

[Posted 8:30am PDT, 1 August 2012] Some residents may be experiencing problems opening the Second Life Viewer in a MacOSX Mountain Lion environment. This is due to a security feature of this operating system which is misidentifying some programs as potential security risks. While this is not indicative of any actual issues with our software, we are working on an update to our viewer which should address this. In the meantime there are instructions on how to bypass this feature temporarily, as well as an explanation of the cause of this issue, here:

http://osxdaily.com/2012/07/27/app-cant-be-opened-because-it-is-from-an-unidentified-developer/

Please note that this is not a problem with the viewer, and that we are not responsible for the workaround above – we are merely providing a link to a possible fix posted by a third party.

If you are experiencing issues using Second Life on Mac OSX, you might try the workaround noted above – but again, please note, as the report states, it is a link from a third-party, and Linden Lab (nor I) cannot be held responsible if the workaround fails or causes other unforeseen issues with your computer.