ClockScreenlet.py crashed with AttributeError in redraw_foreground(): 'NoneType' object has no attribute 'render'

[cari]

install screenlets, run and launch clock and system show message report problem

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: screenlets-pack-all 0.0.1~bzr838+repack-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic x86_64
Architecture: amd64
Date: Wed Mar 30 05:40:52 2011
ExecutablePath: /usr/share/screenlets/screenlets-pack-all/Clock/ClockScreenlet.py
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110302)
InterpreterPath: /usr/bin/python2.7
ProcCmdline: python -u /usr/share/screenlets/screenlets-pack-all/Clock/ClockScreenlet.py
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/share/screenlets/screenlets-pack-all/Clock/ClockScreenlet.py']
SourcePackage: indiv-screenlets
Title: ClockScreenlet.py crashed with AttributeError in redraw_foreground(): 'NoneType' object has no attribute 'render'
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare