In MacOS 10.x, cl+ssl will fail to load out of the box, due to incorrect libssl path. Fix: Replace the *libssl-pathname* definition in cl+ssl.asd with: (defparameter *libssl-pathname* #+(or :win32 :mswindows) "libssl32.dll" #+:macosx "/usr/lib/libssl.dylib" #-(or :win32 :mswindows :macosx) "/usr/lib/libssl.so") Rob