Since it seems to be caused by the Eten and not BlueTools I don't really know what you can do since the actual application load seems to be the cause of the problem. Maybe there is some way to load applications later in the boot sequence? I am personally not familiar with Eten and haven't tried it.
P.S. When you said that you tried a sleep before the BlueTools initialization, you meant a sleep was the very first thing you did, even before the license initialization too right? D.S.