strange message

Hello, I have installed edocman under Joomla for a few days now. That works quite well too. I created categories and created a document. Today I noticed that when I save documents I get the message: "Message body empty". Is this a bug or how can I change it? Sorry for my english.  Thank you.

Hi Andreas,
You can disable the plugin: EDocman Notification Plugin, thus, the notification emails won't be sent when new document is uploaded. And the message won't show.
Thanks
Dam