( for Snow Leopard )
Read the following : this
Search for automator using the Spotlight application or ( Houdah application )
I found and trashed the .......
the automator files in the library
One way other than doing a reinstall is to download Pacifist and use that to reinstall Automator. Pacifist allows you to reinstall 'specific' Apps etc off your Tiger Install DVD.
OS X installer procedure
Choose Optional Installs
Choose Optional Installs.mpkg
I used an unregistered copy of Pacifist to open my Snow Leopard install DVD ...
Pacifist took about 15 minutes to extract the packages.
Once you figure out some of the quirks of Pacifist .... it works very well....
I registered for $20