Role Playing Tools

Save Message History is producing a file that does not contain any actual
message history. Instead, it contains strings of the form
"<div>net.rptools.maptool.model.TextMessage@<hex number>"

Steps to reproduce:

0. Running MapTool 1.2b17 on Ubuntu Linux, Sun Java 1.5.0_08.
1. Create a server and type some messages into the chat window.
2. Select File > Save Message History, and choose a filename to save as.
3. Open the file in a web browser, text editor, etc. to examine it.

Expected Behavior:

Should see the messages I typed in some form.

Actual Behavior:

For each message, there is one line similar to this one: <div>
net.rptools.maptool.model.TextMessage@7b1d52</div>

Attached a log showing the same thing.