Help button on properties page of a Launcher icon returns page not found.

Binary package hint: yelp

Page Not Found
The page ‘nautilus-file-properties-basic’ was not found in the document ‘ghelp:gnome-help’.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: yelp 3.0.0-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
Architecture: amd64
Date: Fri Apr 15 09:06:33 2011
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/yelp
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110330)
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: yelp
UpgradeStatus: No upgrade log present (probably fresh install)
XsessionErrors: (nautilus:1400): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed