Drive Space: Hide the drive icon when no drive connected.

Hide the {default} drive?

Unplug the USB flash drive, then right-click the Drive Space icon and select "Hide" in the menu.
But I guess this will not help.

Please can you send me (attach it here or send to <!-- e --><a href="mailtoupport@tordex.com">support@tordex.com</a><!-- e -->) the file "Drive Spave.tlbplugin" (name can be other). Just drag the Drive Space and drop it on the desktop (hold down CTRL key to make a copy). Also tell me what the drives letters are in your system. I'll test DS with your configuration.