Dionaea quit suddenly

[zam89]

Hi all,
I install dionaea from repo on Ubuntu server 12.04.
Recently, dionaea quit suddenly & when I search through the log file,
i found something like this;

[16052013 17:57:38] python module.c:330-warning: start module.c
[16052013 17:57:38] ihandlers dionaea/ihandlers.py:60-warning: START THE IHANDLERS
[17052013 22:55:27] processor processor.c:346-warning: bistreams/2013-05-17/ <-> bistreams/%Y-%m-%d/

When I run python /usr/lib/dionaea/python/dionaea/ihandlers.py,
it shows this error;

Traceback (most recent call last):
File "/usr/lib/dionaea/python/dionaea/ihandlers.py", line 33, in
from dionaea.core import g_dionaea
ImportError: No module named dionaea.core

What cause this & how to fix it?
Or did I miss something? Or I need to reinstall it again?

Thanks.