Below is an error I got when I did (asdf:oos 'asdf:load-op 'usocket) using clisp-2.43 on Windows 2000.
snip <<<<
READ from #<INPUT BUFFERED FILE-STREAM CHARACTER #P"C:\home\lisp\asdf-registry\usocket\backend\clisp.lisp" @203>: #1=#<PACKAGE RAWSOCK> has no external symbol with name "SOCKET-CLOSE" [Condition of type SYSTEM::SIMPLE-PACKAGE-ERROR]
Restarts: 0: [RETRY] Retry performing #<ASDF:COMPILE-OP NIL #x19F82EF9> on #<ASDF:CL-SOURCE-FILE "clisp" #x19F82199>. 1: [ACCEPT] Continue, treating #<ASDF:COMPILE-OP NIL #x19F82EF9> on #<ASDF:CL-SOURCE-FILE "clisp" #x19F82199> as having been successful. 2: [ABORT] Return to SLIME's top level. 3: [CLOSE-CONNECTION] Close SLIME connection
Backtrace: 0: INVOKE-DEBUGGER 1: SYSTEM::LPAR-READER 2: SYSTEM::LPAR-READER 3: SYSTEM::LPAR-READER 4: SYSTEM::FEATURE-READER 5: READ 6: unwind-protect frame 7: unwind-protect frame 8: unwind-protect frame 9: unwind-protect frame 10: COMPILE-FILE 11: (COMPILE-FILE ASDF:SOURCE-FILE :OUTPUT-FILE ASDF::OUTPUT-FILE) 12: MULTIPLE-VALUE-BIND 13: LET 14: (:LAMBDA '#<ASDF:COMPILE-OP NIL #x19F82EF9> '#1=#<ASDF:CL-SOURCE-FILE "clisp" #x19F82199>) 15: :LAMBDA (ASDF:OPERATION ASDF::C) (DECLARE (IGNORABLE ASDF:OPERATION ASDF::C)) (BLOCK ASDF:PERFORM (LET (# #) (MULTIPLE-VALUE-BIND # # # # #))) 16: ((LAMBDA #1=(ASDF:OPERATION ASDF::C) (DECLARE (SYSTEM::SOURCE #)) #2=(DECLARE (IGNORABLE ASDF:OPERATION ASDF::C)) #3=(LET (# #) (MULTIPLE-VALUE-BIND # # # # #))) #:G4057 #:G4058) 17: frame binding functions #<ADDRESS #x011218B0> binds (~ = dynamically): | CALL-NEXT-METHOD <--> #<FUNCTION-MACRO #<FUNCTION CALL-NEXT-METHOD (SYSTEM::<MACRO-FORM> SYSTEM::<ENV-ARG>) (DECLARE (CONS SYSTEM::<MACRO-FORM>)) (DECLARE (IGNORE SYSTEM::<ENV-ARG>)) (IF (NOT #) (SYSTEM::MACRO-CALL-ERROR SYSTEM::<MACRO-FORM>) (LET* # #))> #<FUNCTION CALL-NEXT-METHOD (&REST CLOS::NEW-ARGS) (IF CLOS::NEW-ARGS (IF # # #) (IF #:G4056 # #))>> Next environment: | NEXT-METHOD-P <--> #<FUNCTION-MACRO #<FUNCTION NEXT-METHOD-P (SYSTEM::<MACRO-FORM> SYSTEM::<ENV-ARG>) (DECLARE (CONS SYSTEM::<MACRO-FORM>)) (DECLARE (IGNORE SYSTEM::<ENV-ARG>)) (IF (NOT #) (SYSTEM::MACRO-CALL-ERROR SYSTEM::<MACRO-FORM>) (LET* NIL #))> #<FUNCTION NEXT-METHOD-P NIL #:G4056>> | CALL-NEXT-METHOD <--> #<FUNCTION-MACRO #<FUNCTION CALL-NEXT-METHOD (SYSTEM::<MACRO-FORM> SYSTEM::<ENV-ARG>) (DECLARE (CONS SYSTEM::<MACRO-FORM>)) (DECLARE (IGNORE SYSTEM::<ENV-ARG>)) (IF (NOT #) (SYSTEM::MACRO-CALL-ERROR SYSTEM::<MACRO-FORM>) (LET* # #))> #<FUNCTION CALL-NEXT-METHOD (&REST CLOS::NEW-ARGS) (IF CLOS::NEW-ARGS (IF # # #) (IF #:G4056 # #))>> 18: SYSTEM::FUNCTION-MACRO-LET 19: (:LAMBDA '#<COMPILED-FUNCTION #:COMPILED-FORM-322-1-1> '#<ASDF:COMPILE-OP NIL #x19F82EF9> '#1=#<ASDF:CL-SOURCE-FILE "clisp" #x19F82199>) 20: :LAMBDA (#:G4056 #:G4057 #:G4058) (SYSTEM::FUNCTION-MACRO-LET ((CALL-NEXT-METHOD # #) (NEXT-METHOD-P # #)) ((LAMBDA # # #) #:G4057 #:G4058)) 21: #:COMPILED-FORM-322-1 22: (ASDF:PERFORM ASDF::OP ASDF:COMPONENT) 23: PROGN 24: RETURN-FROM 25: LET* 26: nested tagbody frame #<ADDRESS #x011217B0> for | #:G4154 --> ((RETURN-FROM #:RESTART-4155 (APPLY #'(LAMBDA NIL # # #) #:ARGS-4156))) | #:G4153 --> ((RETURN-FROM #1=#:RESTART-4155 (APPLY #'(LAMBDA NIL #) #2=#:ARGS-4156)) #:G4154 (RETURN-FROM #1# (APPLY #'(LAMBDA NIL # # #) #2#))) Next environment: | #(#:G4154 #:G4153) --> #<ADDRESS #x011217B0> | #(#:LOOP-4152) --> #<ADDRESS #x01121724> | #(SYSTEM::END-LOOP SYSTEM::BEGIN-LOOP) --> #<ADDRESS #x011216D0> 27: TAGBODY 28: LET 29: nested block frame #<ADDRESS #x01121744> for #:RESTART-4155 Next environment: | #:RESTART-4155 --> #<ADDRESS #x01121744> | NIL --> #<ADDRESS #x011216F0> 30: BLOCK 31: nested tagbody frame #<ADDRESS #x01121724> for | #:LOOP-4152 --> ((BLOCK #1=#:RESTART-4155 (LET (#2=#:ARGS-4156) (TAGBODY # #3=#:G4153 # #4=#:G4154 #))) (GO #:LOOP-4152)) Next environment: | #(#:LOOP-4152) --> #<ADDRESS #x01121724> | #(SYSTEM::END-LOOP SYSTEM::BEGIN-LOOP) --> #<ADDRESS #x011216D0> 32: TAGBODY 33: nested block frame #<ADDRESS #x011216F0> for NIL Next environment: | NIL --> #<ADDRESS #x011216F0> 34: BLOCK 35: nested tagbody frame #<ADDRESS #x011216D0> for | SYSTEM::END-LOOP --> NIL | SYSTEM::BEGIN-LOOP --> ((WHEN (ENDP #1=#:LIST-4150) (GO SYSTEM::END-LOOP)) (SETQ ASDF::OP (CAR (SETQ #2=#:PATTERN-4151 #)) ASDF:COMPONENT (CDR #2#)) (BLOCK NIL (TAGBODY #3=#:LOOP-4152 (BLOCK #4=#:RESTART-4155 #) (GO #3#))) (PSETQ #1# (CDR #1#)) (GO SYSTEM::BEGIN-LOOP) SYSTEM::END-LOOP) Next environment: | #(SYSTEM::END-LOOP SYSTEM::BEGIN-LOOP) --> #<ADDRESS #x011216D0> 36: TAGBODY 37: LET 38: LET 39: LET 40: LET 41: unwind-protect frame 42: UNWIND-PROTECT 43: PROGV 44: LET 45: LET 46: LET* 47: (ASDF:OPERATE 'ASDF:LOAD-OP 'USOCKET) 48: ASDF:OPERATE (ASDF::OPERATION-CLASS ASDF:SYSTEM &REST ASDF::ARGS &KEY (ASDF::VERBOSE T) ...) (DECLARE (SYSTEM::IN-DEFUN ASDF:OPERATE)) (BLOCK ASDF:OPERATE (LET* (# # #) (UNLESS # #) (LET # #))) 49: (ASDF:OPERATE 'ASDF:LOAD-OP LIB) 50: (ASDF 'USOCKET) 51: ASDF (LIB) (DECLARE (SYSTEM::IN-DEFUN ASDF)) (BLOCK ASDF (ASDF:OPERATE 'ASDF:LOAD-OP LIB)) 52: (ASDF 'USOCKET) 53: EVAL 54: unwind-protect frame 55: SWANK::EVAL-REGION 56: SWANK::REPL-EVAL-1-1 57: unwind-protect frame 58: SWANK::TRACK-PACKAGE 59: SWANK::REPL-EVAL-1 60: #:|314 316 (DEFINTERFACE CALL-WITH-SYNTAX-HOOKS (FN) ...)-32-3-1| 61: SWANK-BACKEND:CALL-WITH-SYNTAX-HOOKS 62: SWANK::CALL-WITH-BUFFER-SYNTAX 63: SWANK::REPL-EVAL 64: SWANK:LISTENER-EVAL 65: (SWANK:LISTENER-EVAL "(asdf 'usocket) ") 66: EVAL 67: unwind-protect frame 68: SWANK::EVAL-FOR-EMACS-1 69: #:|588 593 (DEFINTERFACE CALL-WITH-DEBUGGER-HOOK (HOOK FUN) ...)-57-3-1| 70: SWANK-BACKEND:CALL-WITH-DEBUGGER-HOOK 71: SWANK::EVAL-FOR-EMACS 72: SWANK::READ-FROM-EMACS 73: catch frame for tag #:SIMPLE-RESTART-22247 74: SWANK::HANDLE-REQUEST-1 75: #:|588 593 (DEFINTERFACE CALL-WITH-DEBUGGER-HOOK (HOOK FUN) ...)-57-3-1| 76: SWANK-BACKEND:CALL-WITH-DEBUGGER-HOOK 77: SWANK::CALL-WITH-CONNECTION-1 78: SWANK::CALL-WITH-REDIRECTED-IO 79: SWANK::MAYBE-CALL-WITH-IO-REDIRECTION 80: SWANK::CALL-WITH-CONNECTION 81: SWANK::HANDLE-REQUEST 82: SWANK::SIMPLE-SERVE-REQUESTS-2 83: handler frame for conditions SWANK::SWANK-ERROR 84: compiled block frame for #S(RESTART :NAME SWANK::CLOSE-CONNECTION :TEST #<COMPILED-FUNCTION SYSTEM::DEFAULT-RESTART-TEST> :INVOKE-TAG #:SIMPLE-RESTART-22757 :INVOKE-FUNCTION NIL :REPORT #<FUNCTION :LAMBDA (STREAM) (FORMAT STREAM "Close SLIME connection")> :INTERACTIVE #<COMPILED-FUNCTION SYSTEM::DEFAULT-RESTART-INTERACTIVE> :MEANINGFULP T) 85: catch frame for tag #:SIMPLE-RESTART-22757 86: unwind-protect frame 87: SWANK::SIMPLE-SERVE-REQUESTS 88: SWANK::SERVE-REQUESTS 89: unwind-protect frame 90: SWANK::SERVE-CONNECTION 91: SWANK::SETUP-SERVER-SERVE 92: SWANK::SETUP-SERVER 93: SWANK:START-SERVER 94: (FUNCALL (READ-FROM-STRING "swank:start-server") "c:/DOCUME~1/102508/LOCALS~1/Temp/slime.2292" :CODING-SYSTEM "iso-latin-1-unix") 95: PROGN 96: SYSTEM::READ-EVAL-PRINT 97: compiled tagbody frame for #(NIL) 98: catch frame for tag DEBUG