Folder access issue

[timbo343]

Has anyone come across this issue before... i have never seen it in my life (see photo).

Basically a teacher was working on their USB stick about 11:15ish teaching a lesson. They shut down the pc etc, etc, and went off for lunch with their stick. When they came to use the same files at 13:00, they cannot access the files in this folder, though everything else on the stick is ok.

The folder location is USB Stick >> A Level >> A2.

Can anyone help me out on this one.

Thanks

Tim