"No MTP devices." and "No devices." are my folders ???

I'm running a home built version of exmh 2.7.0 on Mandriva 2007.0
(with digits like that it's gotta work, right ;-)

I ran 'Find all folders' from the 'More..." folder menu.  The
result of doing that is that my folder list becomes only 
"No MTP devices." and "No devices."

To work restore my folder list I had to:

- quit exmh
- move ~/.exmh out of the way
- restart exmh
- 'Find all folders'
- quit exmh
- move the old ~/.exmh back

Moving the old ~/.exmh back isn't strictly required, but I prefer
my customization.

'Find all folders' works on exactly the same 2.7.0 version
when I built it on Red Hat Enterprise Linux 3.0, and 4.0 (tcl
8.4.7), and Mandrake 9.0 (tcl 8.3.3), and Mandrake 10.1 (tcl
8.4.something?).  But, it doesn't work on Mandriva 2007.0 (tcl
8.4.13).  I believe that all the tk versions across all of those
systems are appropriate to their own tcl versions.

How can I figure out what causes this?  I'm an adict of 'Find all 
folders' and I'd like to use that feature again.

Thanks....


--
Kevin