You can safely go into your Add/Remove Programs (Windows XP) or Programs and Features (Windows Vista/7) and remove the following:

Microsoft Visual C++ 2010 x86 Runtime - 10.0.xxxxx

Once you remove this, run the UV Realtime installer again, and it will complete the installation of all components, which includes reinstalling this particular one. Microsoft's installer for this component does not recognize compatible versions, so that's why the installation doesn't complete.