SD crashes in brltty when Espeak encounters semi-graphical characters

[Hermann]

Hi,
I've set up the latest brltty from SVN with SD, to test whether the German 
umlaut problem was fixed, which showed up in 
older brltty versions.
The good news: Umlauts are spoken.
The bad news: SD crashes everytime brltty comes upon a semi-graphical character 
or a row of them. You can check this by 
opening the brltty homepage or the archive of this list with w3m or links2 
using the braille-terminal settings.
This seems to be a special problem of the Espeak module, since changing the 
module solves this issue: Espeak-generic 
doesn't crash, but has different issues (the definition of "some" characters is 
not accepted, and adding the quotation 
mark to the list prevents the module from speaking).
So in any case I prefer Espeak as default module.
Back to brltty: What can be the cause of this issue? I don't get the crash in 
all other apps I use with SD (SBL, 
Speakup, Speechd-el etc.)
Hermann

-- 
I use grml (http://grml.org/)