Achille,
(I'm glad your BIM Server is running)
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Do note: there are two "LaunchDaemons" folders:
One is /Library/LaunchDaemons
The other is /System/Library/LaunchDaemons
You should have both folders on your Mac. I don't think Mac OS X will run without the plists in the /System/Library/LaunchDaemons.
The teamwork plists will be found in the /System/Library/LaunchDaemons. I'm guessing you were looking in the other folder.
Anyway, I'm glad your BIM Server is running.
Ed
Graphisoft Technical Support