VLCKit "nightly" builds are not really nightly
Looking at http://nightlies.videolan.org/build/macosx-intel/, the latest nightly build of VLCKit is from 19th of September 2016
However, there are more recent commits than this on the core vlc libs, which have nightly builds up to today (October 10th).
Presumably this means that the VLCKit builds do not have the latest versions of the core libs (which we believe fix some crashes that we are experiencing - we can see relevant commits from 10 days ago).