Fireworks team is planning a new Updater for Fireworks CS4. This Updater will fix the Snow Leopard crash on quit bug, as well as other high priority crash and data loss bugs that we’re aware of.
The Updater is expected to be available later in the second Quarter 2010.
The first Updater can be downloaded from http://www.adobe.com/support/fireworks/downloads_updaters.html
Adobe Fireworks Team