BD internal error with ThML-based genbooks

I have found two bugs in BD that affect ThML-based genbooks.

In particular, there are a two tags which are valid ThML, but cause internal errors in BD. In particular, they are the <verse> tag (which is specifically ThML), and the <cite> tag (which is carried over from the html DTD). When the user navigates to a <div> section which includes either of these elements, they are presented with the following error dialog:

An error has occurred:
Unexpected internal problem. You may need to restart.

This was caused by:
org.jdom.Text cannot be cast to org.jdom.Element

I can provide a sample ThML file which highlights the issue, if it would help. I have verified:

1. This happens in BD under Windows or Linux
2. This does not happen using (non-j)sword-based viewers: BT, GS, Sword for Windows
3. I can change the behavior by simply removing the <cite> tag or the <verse> tag without changing anything else
4. The files in question pass an xml validity test against the ThML DTD using xmllint

I am using BD 1.6. Is there anything else that might help to track this bug?