Why won RealityCharting version 4 install?
You will need administrator privileges to install RealityCharting® and the Adobe AIR runtime. This may be the cause preventing installation of RealityCharting. Without assuming this is the problem try installing the Adobe AIR runtime as the first step. Go to http://get.adobe.com/air/ and try to download it. If you can get that installed try installing RealityCharting® version 4 again.