It seems to me that InsomniaX, a utility to let a MacBook stay awake when the lid is closed, is not working on Mavericks. Can anyone confirm for me?
I experience the same. The "Disable Idle Sleep" selection is automatically turned off and the computer goes to sleep after some time.
Doesn't work at my MBA mid 2011, with Mavericks 10.9.3.
It does work to disable the sleep on lid close, however, I've been getting random restarts with it running.