English tokenizer - langutils

Hello,

Has someone already tried to use langutils (A natural language 
toolkit for common lisp)?
When I compile the tokenizer, I get this error:

**++++ Error in (top-level-form 5):
   Object #<Function meta::meta-reader 200A430A> is of type 
function which is not externalizable to 
#<stream::latin-1-file-stream G:\pe\clip\t_tokenize.ofasl>.


Actually I am only interested in an English tokenizer (not the 
whole toolkit), maybe someone has one to advice?

Thank you,

Francis