Gitweb: 500 - Open git-rev-list failed

Hello,

I just recently installed git and gitosis on my server. I am able to
pull, push, etc. to my repositories that I have setup using gitosis
without any problem. However, when I try to access gitweb, my list of
projects is empty. My configuration files for gitosis all have "gitweb
= yes" specified and my configuration files for gitweb are properly
set for the right project root, etc.

When I manually enter the URL for my project, like the one below, I
receive "500 - Open git-rev-list failed". You can visit the URL below
for a demonstration.

http://code.mbmccormick.com/?p=mccormicktechnologies.com.git

Any help that you have is appreciated. Thanks!

--
Matt McCormick