One possible scenario is that you have a newer and an older version of Final Draft installed and the other version is open. Only one version of Final Draft can be open at one time, so check to see if another version is running. If there is, close it and you should then be able to open the version you want.
If that doesn't work, try to reboot your computer and attempt to launch the program again.
You can also run the application as an administrator (for Windows users) by right-clicking the Final Draft icon and select 'Run as Administrator'.
If the issue persists, uninstall FD13 and then reinstall Final Draft 13 by clicking here and following the steps.
If Final Draft still doesn't open, please open a support ticket and a technician will assist further.
12013
https://fd.support/3WYAZYi