I've got Tree!Explorer on my C860, and the menu for files doesn't seem to be working as it should.  When I tap-and-hold on a file, the menu appears.  If I select 'open', I get the Properties popup instead.  If I select 'open with', nothing seems to happen.  If I select 'send to', the submenu just has a couple greyed-out items.  Any idea what I'm doing wrong?
Also, I've tried editing the treeexplorer.conf file to add to the sendto menu:
[sendto]
item0=/home/QtPalmtop/bin/zeditor
...
but that seems to have no effect on the sendto menu, even after restarting Tree!Explorer?!?!
I've posted a note on the author's site, but I thought I'd seek to collected wisdom of y'all as well.