When I start Eggplant a warning states that Eggplant only finds one license and that this already seems to be in use. I can either select Proceed and go the license dialog or I can simply quit and try again. After a couple of restarts Eggplant will start. It is quite annoying since Eggplant often qoes into sleep for a while before I can restart it.
I found this post on the subject, but it didn’t provide a solution to the problem: