I've seen a bit of crashing with FM Go. Not as much from Pro/Advanced. OnObjectKeystroke also gave me a number of crashes. I am trying to narrow down exactly what is causing the crash, but just haven't had the time yet. I had to use another approach for now.
By chance, is your navigation field in the header or navigation header part?
Bit of a long shot, but what happens if you change the layout theme?
Another thing to check:
If you create a test layout from scratch with the same type of objects (but with nothing copied from the layouts where you've had crashes, do you also get a crash on the test layout?
No, everything is in Body parts.
FileMaker Pro Advanced quit unexpectedly.
I was thinking along those lines too. The problem is that the experiment isn't going to have much value for me. If I get positive proof that the crash can be avoided by rebuilding layouts from scratch I have something less than 278 layouts to rebuild.
Our clients are running FMP14 in Windows and they have not reported this as a problem. I'm on a Mac and I can run FMPA14 without crashing when this script runs, so I think that I'll use that for all support on this system.
If the problem is due to a corrupted layout--what my suggestion is designed to test, it's unlikely that you'll need to rebuild every layout--just the one or two where you see this crashing happen.
Things have improved a bit but in the past FileMaker choked when enountering a script step it didnt' understand and this of course was caused by adding the web and GO to the mix.
GO would free when encountering a step it didn't understand but I think FileMaker has made it move on.
The script editor lets us chose the platform and will indicate the not-understood lines.
Of course sometimes it just chokes.