I was just updating a Runtime so changed the file date in Inno to match the new filename date, as I have many times. This time Inno stalled saying that first the FM .exe file, then, if I removed that line, the .fmpur file were missing. They aren't missing. I have recreated the Runtime several times and rebooted the Mac. In addition, I now find that the previous runtime, successfully compiled by Inno, now has the same problem stalling the compilation.
To may knowledge none of the software on the Mac has changed though there were some updates from Apple installed in the past 2 days (I didn't check what). Is it likely that FMA17 has been corrupted?