Quicksilver not accepting input under Snow Leopard

[peterm]

Quicksilver is not letting me type anything into its command window.
My hotkey works and I am shown "Type to search" input window, however
I can't actually enter any text from the keyboard. I have tried Beta
57 and 58. I am running OSX 10.6.2. I'll raise an issue on Github if
no one has any advice. Thanks for any help.

[Paul Kohut]

So when you activate QS and type something nothing happens? You
should see what you type in a little window right below the window
that says "type to search" (that box happens to be where icons are
displayed). What happens when you press the period key. That should
overlay a text entry window where the icon view is.

Have you looked at the first few pages of the manual?
http://www.google.com/url?sa=D&q=http://mysite.verizon.net/hmelman/Quicksilver.pdf&usg=AFQjCNF-snjgdlj6eA8MRBpmUBYuiQ1ruA