[slime-devel] slime dies on printing some characters?

Hello all, I'm a newb to lisp (using sbcl), slime and emacs, so maybe this is a FAQ or some other trivia I just can't find ... anyway, doing this: (string #\UGARITIC_LETTER_ALPA) causes slime to die and complain on emacs bottom-line about: error in process filter: net-read error: (end-of-file) If I start sbcl from the command-line it works. Most other interesting characters work, like, say #\ARABIC_LETTER_HAMZA or #\HEBREW_LETTER_ALEF, but for whatever reason ugaritic and some others don't. I don't have a comprehensive list, but besides ugaritic, at least #\LANGUAGE_TAG kills slime. What can be done about it? Is there a setting somewhere that needs to be (un)done? Taneli