Dreamweaver Crashes Every time I Run it?

Every time I run Dreamweaver cs4, It Just closes. No error messages, no nothing, It just closes.
I can’t even uninstall It’ for some reason It says

“Critical errors were found in setup for Adobe Dreamweaver cs4”

The Installer database is invalid: please re-install the product from the original media

Please see the setup log file for details. Click Quit to exit setup.”

Anybody know what’s wrong?