As some of you may have noticed, we dropped Mac OS 10.6 support for Marble Blast Platinum 1.51 due to a new extender system which was incompatible. However, thanks to a generous effort by amd42/Derpking (the guy who wrote the extender base system), we have been able to re-add support for those of you who are unable (or unwilling) to update your systems. Mac OS 10.6 users should now see the latest build appear in their launcher and should be able to play online with other Marble Blast Platinum 1.51 players.
Thanks for bearing with us through these updates,
The Platinum Team