I've checked the Known Issues and searched the forum (though it's difficult to search a specific forum unless I'm missing something.)
When I open FGU, the Update button is read. When I click on it, it crashes.
When I click on Setting FGU Crashes.
When I try to uninstall the program, nothing happens.
This has been my experience dealing with FGU, as I haven't tried to do much else with it after these crashes.