We've discovered what appears to be an incompatibility issue with AC18 and Sierra.
In Teamwork, we are unable to drag and drop content from a Layout Book to a Publisher Set.
El Capitan Team members can do this, but our Sierra Guinea Pig has been unable to do this. We've tried it on two different Sierra boxes and the result is the same.
Think Like a Spec Writer
AC4.55 through 26 / USA AC25-5010 USA
Rhino 7 Mac