Registry/patch problem

[Jurosementalistile]

I've played the whole game including ToB through several times before, but now I'm having problems installing ToB, and a problem with the game refusing to recognise that it is already installed, and finally a problem installing the ToB patch. SoA installs fine, but several times after the first time I played, when I tried to start the game it would only give me the option to install. I assume this is a registry problem. ToB failed to finish installing several times, so I decided to play SoA without it, but now I'm nearing the end and I want ToB, so I decided to try one last time, and it worked. But, the second time I tried to play I got the same old problem, and the computer refuses to acknowledge that the game is already installed. I really don't want to have to install again as I would probably have problems with installing ToB again. I tried installing the ToB patch (The SoA patch is already installed) but after taking me to the setup screen when I click 'Next' it says it cannot find the file (it can't find itself?). As the problem is most likely with the registry I'm hoping there is some way around it without having to reinstall. Any help with these problems would be greatly appreciated, thankyou.

[fable]

As this is about ToB problems, and as you've already posted this same thread over in our ToB forum, this one's closed. Don't cross post.