Error -- "Cannot remove folder XXXXX: The directory is not empty."
A web-search on the error message yielded this Technipages answer (but read my comments below before trying this):
When trying to delete folder, you may get the error message: “Cannot Delete [foldername]: The directory is not empty”. Follow these steps to solve this problem.
This is a good start, but is not the complete solution for a plug-in USB stick-- as it turns out, the command above is indeed running a CHKDSK, but on your C: drive. Doesn't hurt but totally doesn't help this particular case either.
The complete set of CHKDSK command-suffixes is given by Wikipedia.
As it turns out, the command you actually want to run for a USB stick is:
chkdsk f: /f
Following the Technipages steps above, but using the command chkdsk f: /f at the OPEN
"The type of the file system is FAT.
I said 'Y'.
"File and folder verification is complete.
I said 'Y'.
CHKDSK finished and the DOS window closed.
Now looking at the root of the USB stick in Windows Explorer, there were two new items:
I was then able to delete both the 32KB file and the faded folder without apparent incident.
Hopefully this will do it for you too.