Hello. I started to look at s-xml-rpc library today and to communicate with Python client. Python's default xmlrpclib sends no-argument methods like this (from debug log): ,---- | <?xml version='1.0'?> | <methodCall> | <methodName>system.listMethods</methodName> | <params> | </params> | </methodCall>12 received call ("system.listMethods" . " | ") `---- Library throws error from #'APPLY because last argument is a string, not a list. A simple patch that makes it work: #v+ diff -u xml-rpc{-orig,}.lisp --- xml-rpc-orig.lisp 2006-08-27 21:43:19.000000000 +0200 +++ xml-rpc.lisp 2006-08-27 21:43:25.000000000 +0200 @@ -494,6 +494,8 @@ ;; -32603 ---> server error. internal xml-rpc error (encode-xml-rpc-fault (format nil "~a" c) -32603))))) (let ((call (decode-xml-rpc (debug-stream in)))) + (unless (listp (rest call)) + (setf (rest call) nil)) (format-debug (or *xml-rpc-debug-stream* t) "~a received call ~s~%" id call) (let ((result (apply *xml-rpc-call-hook* (first call) #v- -- __ Maciek Pasternacki <maciekp@japhy.fnord.org> [ http://japhy.fnord.org/ ] `| _ |_\ / { Ibi nullus timet mortem ,|{-}|}| }\/ sed pro Baccho mittunt sortem. } \/ |____/ ( Carmina Burana ) -><-