Caution!!!
Save your work!!
Under the menu expiration setting, if you select the value (days) and erase it an error will appear and inform you to choose a value greater than zero- you click "ok" and the error message returns again, and again, and ...
I have yet to find a way to get around this-
Ctrl+Alt+Delete is to only way to escape it. Hope you saved your work, cause your about lost whatever it was...

Ver 3.0.0.1 coming soon to patch near you!