For the sake of any future developers who run into the same issue: this appears to have been caused by a glitch in the installation process of FileMaker Go. Simply deleting, then reinstalling the app restored the ability to write PDFs to the app's sandboxed Documents directory.
I'd love to know if this was a one-in-a-million bug or if anyone else has experienced it, so please let me know by replying to this thread if you've also had a problem saving PDFs in FileMaker Go, and let me know if deleting/reinstalling fixed it for you, too.
-- Paul --
Is this a known bug? Am I missing a local setting on the iPad 3? I'm tearing my hair out here.
Steps to Reproduce:
1) Create script with the following steps:
2) Connect to database file on remote host using an iPad 1G and an iPad 3G (both running iOS 5.1.1 and FM Go 12.0.4) and run script.
On 1st gen. iPad, final step shows Dialog that looks like this (assuming previously empty Documents directory):
On 3rd gen. iPad, Dialog looks like this:
Further inspection shows that file was indeed saved as expected on iPad 1G, and that no file was saved on iPad 3G.
Expected same result from both iPads.