This is a relatively old application. It was designed to run on Windows XP, Windows 2000, Windows NT or Windows Vista, and if you are using a newer version of OS you might experience some compatibility issues. In this case, run the application by right click on the EXE file, go to Properties -> Compatibility tab and select "Run in compatibility with Windows XP". This might fix the problem. If your OS is among the compatible ones, uninstall it and install the latest version.