Mcclim error on SBCL 2.4.8 under 32 bits

Hello. I use SBCL 2.4.8, and everything worked ok,
even quicklisp and fetching mcclim.

But this happens upon loading the demo example
from https://github.com/McCLIM/McCLIM:

* (app:app-main)

debugger invoked on a TYPE-ERROR @37FEDBAF in thread
#<THREAD tid=21824 "main thread" RUNNING {38B2A059}>:
  The value
    -20
  is not of type
    (MOD 536870909)
  when binding SB-IMPL::REMAINING-REQUEST

Type HELP for debugger help, or (SB-EXT:EXIT) to exit from SBCL.

restarts (invokable by number or by possibly-abbreviated name):
  0: [ABORT] Exit debugger, returning to top level.

(SB-IMPL::FD-STREAM-READ-N-BYTES #<SB-SYS:FD-STREAM for "socket, peer: /tmp/.X11-unix/X0" {40501F31}> #(1 0 18 0 3 0 0 0 12 0 0 0 ...) #<unused argument> 32 12 T)

What could it be the issue? on theading support:

* *features*
(:QUICKLISP :ASDF3.3 :ASDF3.2 :ASDF3.1 :ASDF3 :ASDF2 :ASDF :OS-UNIX
 :NON-BASE-CHARS-EXIST-P :ASDF-UNICODE :X86 :GENCGC :ANSI-CL :COMMON-LISP :ELF
 :IEEE-FLOATING-POINT :LINUX :LITTLE-ENDIAN :PACKAGE-LOCAL-NICKNAMES
 :SB-CORE-COMPRESSION :SB-LDB :SB-PACKAGE-LOCKS :SB-THREAD :SB-UNICODE :SBCL
 :UNIX)
*