Hi, It seems to me that LOAD-FOREIGN-LIBRARY-PATH expects %LOAD-FOREIGN-LIBRARY to signal an error upon failure to load a library. On my Debian system's CMUCL, it does not do so, causing LOAD-FOREIGN-LIBRARY to fail to load any libraries that have to be searched for in the *FOREIGN-LIBRARY-DIRECTORIES*. The patch below makes LOAD-FOREIGN-LIBRARY work for me. Please tell me whether my needing this patch means I'm doing something wrong. :) --- old-cffi/src/cffi-cmucl.lisp 2008-02-10 18:36:33.000000000 +0100 +++ new-cffi/src/cffi-cmucl.lisp 2008-02-10 18:36:34.000000000 +0100 @@ -357,7 +357,7 @@ (sys::load-object-file path) (cond ;; Loading failed. - ((stringp message) nil) + ((stringp message) (error "~A" message)) ;; The library was already loaded. ((null ret) (cdr (rassoc path sys::*global-table* :test #'string=))) ;; The library has been loaded, but since SYS::LOAD-OBJECT-FILE Regards, Matthias