can't click buttons in virus chest

[REDACTED]

I can interact with the virus chest in any way, except that when I select a file and try to "restore" it, nothing happens, as though I didn't even click the button.
I'm using windows 7 and the most recent, updated version of avast

[Pondus]

if you right click on avast tray icon and access chest from there, same thing?

when I select a file and try to "restore" it, nothing happens,

Note that when you restore a file, a copy remain in chest