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Max 4.6.2がMacOS 10.4.9　(Intel) で動かないよー(Launch後、直ちに終了する)と思ったけど、解決策が示されていました。
http://www.cycling74.com/twiki/bin/view/FAQs/MacUpdate1049

There are two options to remedy this problem:

1. Go to the Apple Support page and download the Combo Updater This should fix any problems introduced with the automatic update installer. We have had reports from some individuals that require multiple attempts at installing the Combo Update before it takes effect.

2. Download and run the prebinding script supplied by PACE here. Be sure to read the "Read Me" file that accompanies the file and follow the instructions given there. Once you have repaired the prebinding of your OS, the crash should no longer occur.

この2の方を試しました。結果は良好。
ありがとうCycling'74