[Mailman-Users] Error Message - Crontab

[Alex Yu]

Hello,

This is the error crontab message I got.  Would someone help me out?
Mailman was running very in past one month.  Suddently I just got this
message.  I am running beta 9.

Subject: Cron <mailman at academy> /usr/bin/python
/usr/local/mailman/cron/run_queue
X-Cron-Env: <SHELL=/bin/sh>
X-Cron-Env: <HOME=/usr/local/mailman>
X-Cron-Env: <PATH=/usr/bin:/bin>
X-Cron-Env: <LOGNAME=mailman>
:

shell-init: could not get current directory: 

Alex