App preventing sleep/hibernation

[danmaxis]

The app execution is currently preventing system from hibernating after inactivity.
Even when I lock my laptop, I does not sleep on its own. It is not good for laptop/notebook users.
Would you kindly check on this?

Thanks,
great app by the way

[ajitid]

Not the library author, but I ran Twenty and checked this but didn't find Twenty's name in the list. Could there be some other app that's causing your computer to not go into sleep?