Project Reality download bugged? help pls

[gingerempire]

About a month or so ago, I had a bad stick of RAM in my computer, which I have now replaced. But during that time, I tried to download PR, in which it got corrupt, and because I couldnt play it I just deleted it. Somewhere along the line, a file got left over, and is now hiding in my computer. So, when I run the ISO to try and install PR, I get a play button instead of an install button.

I've searched everywhere for a missing PR file and cannot seem to find one.

Below will be a list of tried solutions:
- There is not uninstall button.
- Revo Uninstall cannot find a PR program. (as well as any other uninstaller)

Any help or suggestions would be greatly appreciated.

UPDATE (SOLVED): Seems as if I have fixed my own problem. Gotta love it when that happens. Apparently you have to run setup.exe instead of autorun.exe (in winrar)