I'm in the process of consolidating 150+ separate databases, each with a single layout, into one single database. I'm copying layouts and pasting them into the new database.
Using Mac OS X 10.12.1 (Sierra), 64GB RAM, Mac Pro
FMPA 15 crashes constantly; FMPA 14 hasn't crashed in at least 40 copy/paste procedures.
Removed all plugins, still got crashes.