The crash has happened at least twice. I was double-clicking on PDF and PNG files.
Duplicating the error is a real hassle. When I click on the button to re-enable the app nothing happens...the same error diaglog just reappears. I can't get into Fences to restore my layout from backup so I have to reinstall Fences. I learned that after un-installing Fences I have to restart the computer or I will get a message telling me to restart after I reinstalled. So, at that point I have to uninstall again, restart the computer, then reinstall Fences 4.xxx. Then I have to re-organize my desktop the way I like it because the backups haven't been accessible.
I wonder if I can go into file explorer and the registry if necessary and preserve my desktop layout backups without being able to open Fences after it crashes?
In the mean time, to avoid this problem, I never double click on a file in a portal...I open the file explorer by double clicking the title bar and open the file from Windows file explorer. So, for now the only thing the portal is good for is a desktop shortcut to a Windows folder that I can scroll through for viewing the files but not open the files.