Problems with sudo do-release-upgrade -d

I tried to run sudo do-release-upgrade -d and I got this error

Traceback (most recent call last): File "/usr/bin/do-release-upgrade", line 145, in <module> fetcher.run_options += ["--mode=%s" % options.mode, AttributeError: type object 'DistUpgradeFetcherCore' has no attribute 'run_options'

What do I need to do to fix this? I was trying to see if I good get the ubuntu 13.04 dailybuild to install. I guess I should post a new thread for this, but can I upgrade to the daily build without having to install fresh from an ISO?

Thanks.

Is it happening again?

https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1076186

Since the command "do-release-upgrade -d" is used to upgrade to a development release, I think the post will be best answered in the U +1 (Raring Ringtail) forum.

Moved.

See my answer, in this thread.