I have lost my Adobe Acrobat pro 9?

So, i realised i was running CS4 and CS5 and it was taking up a lot of space. I deleted CS4 but in the process of doing so i must have deleted Adobe Acrobat Pro 9? I tried uninstalling and reinstalling CS5 Master Collection again so that Acrobat would be reinstalled but it is still saying that the application is damaged or incomplete? does anyone know how to fix this problem?

Any feedback would be greatly appreciated.

In my version of CS5, Acrobat was supplied on a separate disc from the rest of the Master Suite.

Acrobat is free from Adobe. Try there.

Acrobat Pro is not free and comes when purchasing Adobe CS Suites.