Program not opening

Hello, I’m new to GanttProject. I just downloaded it and installed it but the program is not launching at all? I double click the icon and nothing happens. I have tried reinstalling and still the same. I’m using Windows 10.
Have you seen this issue before?
Thanks!

Hello, you may want to make sure that Java Runtime version 7 or higher is installed or just install the latest one. If you do have Java Runtime then you can troubleshoot the issue using ZIP distribution: https://github.com/bardsoftware/ganttproject/wiki/Installing-from-ZIP