Users are unable to attach files to an e-mail message while using the Vaadin-Mail application. Doing so generates an exception on tomcat and the system fails to attach the file.
1. User adds a site
2. User adds the Vaadin-Mail portlet
3. User configures an e-mail address
4. User attempt to send an e-mail with an attachment
- Upon clicking "Upload" the System is unable to attach the file to the e-mail message