Installation of CS6 Mac installs wrong Photoshop version.

When I download and Install CS6 Mac using EITHER the Disk that came with the software or the download from the Adobe website, it installs all of the Adobe Design Suite Aps (e.g. Illustrator, Indesign, etc.) except for Adobe Photoshop.

The Photoshop icon in my applications folder has a slash bar across it. When I click on it to open it I get the message: "You can't open the application "Adobe Photoshop CS^.App" because Power PC applications are no longer supported.

I've uninstalled and reinstalled just the Photoshop ap but still get same error message.

Note: My serial number is a CS6 upgrade from CS4. But this didn't affect the other Creative Suite Design Standard aps.

What else can I do?