"Could not open location 'file:///home/"

[NoOp]

Odd occurance on one of my 9.04 gnome systems; not sure what I did to
cause this, but when I click 'Places|Home' or any other folder in
'Places' I get the following msg:

"Could not open location 'file:///home/<username>'
No application is registered as handling this file"

I've tried replacing .gnome, .gnome2, .gnome_private, .local, .config,
reinstalling just about every 'menu' & 'gnome' that I can find. It's
definately a configuration issue of sorts as I do not experience the
same with other users on the system.

I can open Nautilus via:
1. Applications|File Browser
2. Atlt-F2: Nautilus
etc. And all folders work just fine. Just can't do it from 'Places'.

I've googled:
<http://www.google.com/search?q=ubuntu+%2Bkarmic+%2B"Could+not+open+location+'file:///home/"&complete=0&hl=en&filter=0>
and tried searching launchpad:
<https://launchpad.net/+search?field.text="Could+not+open+location+'file%3A%2F%2F%2Fhome%2F">
and can't seem to find a solution (Note: I've added to
https://bugs.launchpad.net/ubuntu/+source/psad/+bug/477596 which is
filed against the wrong package).

So, I'm stumped. Any suggestions?