Dyld: Library not loaded error on OSX 10.13.4

[jdtournier]

@judominguez

Warning: You have unlinked kegs in your Cellar

Leaving kegs unlinked can lead to build-trouble and cause brews that depend on

those kegs to fail to run properly once built. Run brew link on these:

mrtrix3

@maxpietsch, could this not have something to do with it…?