MailCheckScreenlet.py crashed with AttributeError in run_mailcheck()

[amoalsale]

Binary package hint: screenlets

source package : Screenlets
Release Ubuntu 9.04
Package version : Screenlets 0.1.2

I expected that after reboot the screenlet Mailcheck will start but it crashed with AttributeError in run_mailcheck() according to error message.

ProblemType: Crash
Architecture: i386
DistroRelease: Ubuntu 9.04
ExecutablePath: /usr/share/screenlets/MailCheck/MailCheckScreenlet.py
InterpreterPath: /usr/bin/python2.6
Package: screenlets 0.1.2-3ubuntu2
PackageArchitecture: all
ProcCmdline: python -u /usr/share/screenlets/MailCheck/MailCheckScreenlet.py
ProcEnviron:
 LANG=en_IN
 SHELL=/bin/bash
PythonArgs: ['/usr/share/screenlets/MailCheck/MailCheckScreenlet.py']
SourcePackage: screenlets
Title: MailCheckScreenlet.py crashed with AttributeError in run_mailcheck()
Traceback:
 Traceback (most recent call last):
   File "/usr/share/screenlets/MailCheck/MailCheckScreenlet.py", line 196, in run_mailcheck
     if not self.__mailbackend.refreshing:
 AttributeError: 'NoneType' object has no attribute 'refreshing'
Uname: Linux 2.6.28-11-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare