Fireworks as the default image editor.
I upgraded from Fireworks MX 2004 to Fireworks CS3. The upgrade set my default image editor to Photoshop. I tried unsuccessfully to make Fireworks the default image editor. Windows did not throw an error nor would it associate the application. So I dug into the registry and found this key:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Applications\Fireworks.exe\shell
The following keys were still pointing to my old Fireworks install:
\Edit Firworks\command
\Open\command
\Preview\command
After changing them to point to my Firworks CS3 install I successfully changed my default image editor back to Fireworks.



You don't happen to have a problem with Fireworks CS3 crashing when you open certain .jpgs, do you?