Although  I have been hanging out on various Bitcoin forums, the most frequented being Bitcointalk, and helping people out with various tech support issues with Bitcoin Core. I decided to compile the most frequent issues and troubleshooting tips into this post here, partially to help people troubleshoot their install, and partially to help me not have to keep posting the same thing over and over again.The error is complaining of a missing boost-filesystem shared library (.dylib) in the /usr/local folder. On Mac it's usually found there if you compile from source, but if you install it from a DMG or the like it will appear in /Applications.