FCPX nothing happens when trying to import ProRes from Sony FS7 XDCA - XDROOT

Odd behavior from FCPX when trying to import ProRes footage from the FS7 / XDCA recorder.
The XDROOT folder structure is intact. It has been copied from the Sony card to HD. The card has been freshly formatted, there is no other footage on the card.
FCPX just hangs (nothing happens - rolling ball) when looking at the folder from Import window.
On the other hand, directly drag and drop the .mov file from the XDROOT/Clip works just fine.
Any ideas?

Using Import from FCPX... Stuck there, nothing happens.

Drop & dragging the .mov file works fine though.

Note: Premiere sees the file inside the XDROOT, so does Resolve.