Trying to load trivial-shell by ASDF on Mac OS X

I'm trying to load trivial-shell on Mac OS X.

When I execute the following command:

(asdf:oos 'asdf:load-op :trivial-shell)

I get the following error:

decoding error on stream
#<SB-SYS:FD-S开发者_Go百科TREAM for "file /Users/paul/lispsystems/trivial-shell.asd" 
     {129D4569}>
(:EXTERNAL-FORMAT :UTF-8):
  the octet sequence (180) cannot be decoded.
   [Condition of type SB-INT:STREAM-DECODING-ERROR]

Can anyone tell me what I'm doing wrong here?

Code 180 corresponds to ACUTE_ACCENT. I don't see anything like that in trivial-shell.asd on my system, and the project loads fine in SBCL. The md5 sum of the .asd file is 934952bf4854126a1d6fca2d33baffa2. Is yours different?

I loaded this package with quicklisp (http://www.quicklisp.org/) on ccl; not sure quicklisp will load it using sbcl, but it might be worth a shot.