To install the application properly, first uninstall it and use CCleaner to remove the registry keys then locate the setup package of the application. Right click it and use Run as Administrator and confirm the selection. This will give exclusive rights to the application. When the installation is finished, do the same for the shortcut on the desktop. Then the software should work normally, however, if you still encounter issues, it's because the product is not compatible with Windows 8.1 at all.