Can't open new version of Photoshop

[Guest]

I have installed Photoshop CS5.1.  When I try to open it, I get the message "You can't open the application "Adobe Photoshop CS5.1" because it is not supported on this architecture."  I have Mac OS X, Version 10.5.8, Processor 2.66 GHz Intel Core 2 Duo, Memory 2GB 1067 MHz DDr3.  What do I need to be able to open the new Photoshop?

[Preran]

Am not sure if this is the answer to your problem, bu do have a look at this discussion: http://forums.adobe.com/message/4085592

[Jeffrey_A_Wright]

Ambergranger0101 where are you opening Photoshop from?  Did you move the application to a different location?  The application should be located in /Applications/Adobe Photoshop CS.51.

[Guest]

Yes, I'm opening it from the location in the Applications folder.