The device 'Generic volume' cannot be stopped right now. Try stopping the device later.

My MS Access 2007 application has a routine that opens a file dialog box
using Application.FileDialog for the user to select a text file then it
establishes a connect string in a linked table and imports data from the
text file. I've noticed that if the selected text file is on a USB drive,
after I do the import, when I try to "Safely Remove Hardware" from the
system tray, I get the following error:

The device 'Generic volume' cannot be stopped right now. Try stopping the
device later.

Is...

The device 'Generic volume' cannot be stopped right now. Try stopping the device later.