Without an exact error, you can't know for sure the reason that makes KP StarOne unavailable. I just installed this application, and it is working properly. What can I recommend you is to install it once again. First, go to Control Panel > Uninstall a program > search there for KP StarOne > right click on it and select uninstall. After, go to Software Informer application's page and download it again. After the download is complete, open the setup file and start the installation process.