Hudson Pre-Release: 401 HTTP error when attempting kforge pull

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I am trying to run a Hudson pre-install on the 'gestures' stack. Hudson's console output is at http://build.willowgarage.com/job/prerelease_unstable_gestures_lucid_i386/2/console.

The salient part seems to be this HTTP 401 error that prevents Hudson from pulling the stack out of kforge into a stack overlay:

------------------  Begin Excerpt --------------------------
Install the stacks to test from source.
=========================================
Failed to execute 'rosinstall --rosdep-yes stack_overlay /opt/ros/unstable stack_overlay.rosinstall'
=========================================
Initialized empty Git repository in /tmp/install_dir/stack_overlay/gestures/.git/
rosinstall operating on /tmp/install_dir/stack_overlay from specifications in rosinstall files  /opt/ros/unstable,         stack_overlay.rosinstall
Installing https://kforge.ros.org/gestures/gestures master to /tmp/install_dir/stack_overlay/gestures

=========================================
error: The requested URL returned error: 401 while accessing https://kforge.ros.org/gestures/gestures/info/refs

fatal: HTTP request failed
ERROR: Failed to install tree '/tmp/install_dir/stack_overlay/gestures'
 Checkout of https://kforge.ros.org/gestures/gestures version master into /tmp/install_dir/stack_overlay/gestures failed.
------------ End Excerpt -------------

401 is 'user authorization required'. Do I need to open the kforge project somehow?

thanks!

Andreas