Need some help

Now that the new patch came out im starting to have some problems. When the ptach trys to install it gives me this message:

Registry error loading key 'Warcraft III\InstallPath'
The system cannot find the file specified.

Can anybody help me?

:\ .......................... :\ .................... :\ ............. try downloading again from both a web or from bnet.. i dun haf this prob tho. so i might be wrong..

I figured out the problem. it had something to do with windows xp.