Import audio error message

When I attempt to import audio, I get the following error message:

Could not complete the Import Audio command because Assertion in "/Volumes/Development/153787/ProTools/NewFileLibs/Cfd/MacBuild/../MacOS/Cfd_ImportAudioDialogMacOS.mm", line 559.

I'm on a 2015 Macbook Pro, El Capitan 10.11.2, running PT 11.3.2, my interface is an Apogee Duet.

Thanks in advance,
Michael

Import audio error message