+1
I had to search through the spam in google groups to find the answer to
the "Cannot branch from repository root" question. I know there a doc in
the corp wiki but I quit long before I knew gvn existed. Perhaps
the "Sample gvn workflow" section from GvnUserGuide can be published in a
modified form. A doc blurb about requiring /trunk, /changes, etc and/or a
better error message ("Not working from a .../trunk/.") would have be
awesome.