Why can't I open Photoshop CS5.1?

I can't open Photoshop CS Extended 5.1.  I recently started adding CS6 requests, but I have not installed Photoshop CS6 again, because Adobe's Web site indicates that other CS applications can run side-by-side with CS6 applications on your computer.  Should I go ahead and install Photoshop CS6, or is there a simpler solution?

Well, I notice that I also have a problem with Photoshop CS5.  I can't open it.  Since Illustrator and Photoshop are the only Adobe programs I have are not CS6, I'll download the CS6 in both versions and see how it works.

Tags: Photoshop

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