As little help for those who have had a few issues getting the leap motion to work with UE4.7 here’s a few tips that I found helpful. Firstly once you have copied the files into the root directory, when you load UE4 check the 0.9… version of the leap rather than v1.0.
Then once inside UE4, delete the character start model so that you can see you hands inside the environment.
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Once these extra steps are taken, the leap motion should work inside you environment.