ACK! I just had the same issue with mine. Drove me nuts for several days. It seems to have coincided with the last update to FM Go.
The only thing I could find that fixed it was restoring the iPad as a new device. Hopefully, someone else knows a better method.
This should help...
It has to do with the latest version of FileMaker Go supporting "data protection."
You simply need to enter your passcode prior to copying files to and from your iOS device.
Thanks for the quick reply. Strangely my iPhone is fine with moving files on and off it, it's only the iPad that has the problem.
Unfortunately restoring the iPad will wipe the data I'm trying to get off it!
That's fixed it.
Thanks for the very quick response! Sorted!
Oh, good grief! I wish I'd known that before doing a "restore as new device"!!!
Hey, Steve, feature request: Let's change that error message to, "Data could not be copied to your device because it is locked with a passcode", K? Woulda saved me a bunch of time and effort (and I'm still not done!).