Install Hangs At Setup?

[mortsubite]

So I've installed FAK over 9000 times before and never encountered this problem. After selecting which components to install and clicking "Install" the setup dialog just hangs there and doesn't do anything at all. I've tried searching the forum for similar problems, but had no luck. The only thing I can think is that perhaps FAK won't install on SP3? I've installed the UXtheme patcher, and it is installed properly, but still no joy.

Little help here?

M.