Microsoft ended support for Windows 7 on January 14, 2020. If you are still using Windows 7, Microsoft recommends upgrading to Windows 10 as your PC may become more vulnerable to security risks.
Starting March 1st, the Visual Lighting software will not be guaranteed to work on a Windows 7 computer. Future development will focus on testing compatibility with Windows 10 64 bit operating systems version 1803 or higher.
Microsoft Announcement:
https://www.microsoft.com/en-us/microsoft-365/windows/end-of-windows-7-support