Product and version FileMaker Pro (Advanced) 15.0.1
OS and version OS X 10.10.5 (but probably not relevant)
The french translation of the new menu command FILE > GET STARTED… is wrongly typed.
It says : COMMERCER… which means "dealing"
instead of : COMMENCER… which means "get started"
How to replicate
Well, on OS X, you can just change you language settings to French and restart FileMaker Pro.
Workaround (if any)