This appears to be a bug in the Windows Vista x64
functionality with Flex 3 (even when the program is run as
Administrator). I have posted a bug report and the work-around I
discovered here at Adobe's Flex Bug and Issue Management System:
In case the link above becomes invalid, the problem is that
NONE of the Wizard Folder expand to show and of the wizards
available in the Wizard Selection window when you click to expand
any folder and show its contents. The work-around is to type part
of the name of the particular wizard you want to run in the search
field above the wizard folder listings. This will cause the folder
to expand and reveal the wizards matching what the user has typed.
In my case I had to install Flex 3 on my Windows XP system to know
the names of what I was searching for, and typing "cold" brought up
the ColdFusion CRUD wizard below the folder.