CS5 Help

I recently got the CS5 master collection and im having some problems, every time i save a render or past ones ive saved open up fine in CS4 but with CS5 i get and error message saying:

http://i34.tinypic.com/2mn4nr8.png

Its trying to open an Adobe Fireworks Document but i didnt save it as one. so almost all of my images and c4d and renders are saved as this and i cant open them in photoshop.

So if you know anything about this i would appreciate the help

You could try one of these options:
http://kb2.adobe.com/cps/329/329945.html