IMAP folder issue (Windows)

I'm having a really weird problem with Mulberry on Windows.  I just did a 
fresh install on a brand new system, as I wanted to lose some of the cruft 
I've accumulated over the years.  However, Mulberry refuses to correctly 
iterate all my folders via IMAP.

For example, I have the following structure:

INBOX
INBOX/IETF
INBOX/IETF/ietf-krb-wg

When I log in, I can see:

INBOX
->IETF

But *not* ietf-krb-wg

if I create a new folder off of IETF (say blah), this works until I quit 
and restart Mulberry.  Then, once again, all I can see is IETF.

If I do an info about the folder for IETF, I see the Hierarchy is "%".  If 
I view the same folder from my Mac, which does not have this problem, it 
says the Hierarchy is "*".  The Hierarchy Separator is "/" for both.

Also, after viewing the details of the mailbox, Mulberry will always crash. 
This happens regardless of 4.0.8 or 4.0.9a1.  Any helpful hints to fix 
this?  It was working just fine on my old Windows7 64-bit system (The new 
system is also Windows7 64-bit).

Thanks,
Quanah