Ableton Live 7.016 and 8 both worked with Snow Leopard w/o need of an update. None of my plugins required an update to work with Snow Leopard --- accept for the AU plugin for POD Farm [can't save stereo tones] which also did not work with Leopard and may never get fixed because Line 6 support is unable to duplicate the problem. The pre-Snow Leopard driver for my Presonus i1393 audio interface works fine.
The only software I used with Leopard which had problems with Snow Leopard are:
1) pre-4.24 Line 6 drivers.
2) Line 6 Monkey
3) An on demand anti-virus scanner called ClamXAV.
4) A script I use to sync MP3 files from my SANSA Clip MP3 player to iTunes.
Fortunately, Snow Leopard updates for ClamXAV and the iTune script came out months ago. And, please note, both of those products are freeware.
