MindManager import fail on macOS 3.6.19

Hi folks,
Fairly new to MN but just updated to 3.6.17 and I can’t import Mindmanager files any more. I’ve reverted to 3.6.15 as I’m in the middle of something urgent that relies on this. I promise to look more closely for best ways to report bugs but thought I’d flag it quickly to warn others in case it’s a bug in the update, not just at my end!

Hello

Hello, is this problem still present in version 3.7,2?

Kind Regards,
MarginNote-Relight
Support Team