Product and version FileMaker Pro Advanced 14.0.4 32-bit
OS and version Windows 7
Running a DDR was causing FMPA to "quit unexpectedly" every time. The DDR xml file would be truncated at seemingly random places. After a few hours of troubleshooting, I traced it to this:
A script with a Custom Dialog script step in it, with a button whose text is:
The script actually works, but if you try to actually save the dialog step, it won't accept that string of text as valid. See how it has a pair of quotes at each end. My guess is that the text might have had a single quote when it was created, probably in FileMaker 10 or 11 (I'm not the creator of the file so I don't know for sure), and that the extra quotes were added during conversion.
So perhaps the real bug is: expletive text is not converted properly?
How to replicate
This is obscure, I know. If you're really interested, I could send you a clone of the file so you can crash the DDR. I don't have an old non-converted file to figure out how this came to be.
I changed the text to "OK" and now the DDR is created without issues.