Backup doesn't exclude folders?

If this is a known issue, I apologize. I briefly looked through the forum and didn't see this issue.

I'm using Toucan (portable) for the first time, and I'd like to use it to backup everything on my USB drive except my MP3 and Kino folder (off the root). I've tried entering each of the following in the Folder Exclude box, but none of them seem to work:

MP3
Kino
MP3\
Kino\
\MP3
\Kino
\MP3\
\Kino\
D:\MP3
D:\Kino
D:\MP3\
D:\Kino\
@drive@\MP3
@drive@\Kino
@drive@\MP3\
@drive@\Kino\
@drive@MP3\
@drive@Kino\
@drive@MP3
@drive@Kino

What is the syntax I should be trying? Case sensitive?

Using Toucan 1.2.2.0.

Thanks.