No access + can't remove

[nbelnap]

I did somethng wrong, I know not what. QS is running in background,
but nothing I've tried gives me access. Nor can I remove QS (to start
over), since I can't stop it: doesn't appear on the Force Quit
list. And OS X (Leopard) won't let me remove a running program.
Catch 58? (The trouble began when I started messing with Preferences
via Command-, (which also does not work).
Help!

[Jon Stovell (a.k.a. Sesquipedalian)]

First, if Quicksilver's preferences are not working for you, you
should install the latest version (β58 at the time of writing), which
available from the Quicksilver section of http://blacktree.com, or
directly from http://github.com/tiennou/blacktree-alchemy/downloads.

If your Quicksilver activation shortcut (Control-Space by default) is
not working, you can also activate it by double-clicking on the
Quicksilver application itself in Finder. Then you can go into the
preferences and adjust the activation shortcut to something else
instead.

Background applications never appear in the Force Quit dialog, so that
is why you cannot find Quicksilver listed there. Instead, you can use
Activity Monitor (in /Applications/Utilities) to control all your
running processes.