I realize this sounds dubious ... possibly a bug... probably user error.
When I add a new font to a blender project that came with pre-packaged font it causes the BI animation rendering to crash Blender.
The message in the upper left says, 'Frame 1 ... Raytree Building', then Blender exits with no further warning or error message.
... on tinkering around a little more it's a specific true type font that I just imported ...
Any guidance would be appreciated.