Snow Leopard and Adobe CS3

[Michael Wisniewski]

From an Adobe FAQ regarding support for Snow Leopard.

Q. Will older versions of Adobe creative software—such as Adobe Creative Suite 3 or Macromedia® Studio 8
software—support Mac OS X Snow Leopard (v10.6)?

A. Older versions of Adobe creative software were not included in our testing efforts. While older Adobe and
Macromedia applications may install and run on Mac OS X Snow Leopard (v10.6), they were designed, tested,
and released to the public several years before this new operating system became available. You may therefore
experience a variety of installation, stability, and reliability issues for which there is no resolution. Older versions
of our creative software will not be updated to support Mac OS X Snow Leopard (v10.6).

Q. Are Adobe® Creative Suite® 4 products and components compatible with Mac OS X Snow Leopard (v10.6)?
A. Yes. Working closely with Apple, Adobe has tested and determined that our Adobe Creative Suite 4
products and components are compatible with Mac OS X Snow Leopard.

[Dan Foster]

Originally Posted by Michael Wisniewski

From an Adobe FAQ regarding support for Snow Leopard.

To be fair, this was later issued:

John Nack on Adobe: Information about Photoshop CS3 on Snow Leopard

Essentially, the team apparently did do some testing of CS3 on Snow Leopard and found it to have reasonably worked. This was subsequently supported by a few other early independent (non-Adobe, non-Apple) Snow Leopard reviews published recently.

As for a partial list of known apps with Snow Leopard issues:

Snow Leopard - what doesn't work ? The Register

[Tim Dashwood]

As of this writing no plugins that utilize Quartz Composer will work with After Effects CS3 or 4 in Snow Leopard. This includes any 3rd party plugins that requires FxFactory. Adobe has acknowledged the bug and we can presume they are working on it.
After Effects and Snow Leopard - Keyframes

BTW, FxFactory plugins work fine with Snow Leopard and Final Cut Studio.