[[!comment format=mdwn
 username="http://joeyh.name/"
 ip="4.153.2.189"
 subject="comment 1"
 date="2012-07-26T18:17:40Z"
 content="""
This could happen if you already had an old version of git-annex assistant running in that repository.

Try:

git annex assistant --stop ; git annex webapp
"""]]
