Shield can’t pick video directory



I have a shield pro connected to a usb drive with exFAT file system.

When I try to pick the video directory. I see the usb drive and the directories but I can’t select the video directory.

On windows with same drive there is a little check box and I can select the directory.

Tried switching skin to Aeon and I now get little check boxes next to the directories but I can’t select them.

ps
I’m a suffering beginner