[cxml-devel] building cxml-2006-01-05.tgz

I am attempting to use cxml with sbcl 0.9.6 with unicode support on linux. When I attempt to load cxml using the latest release, mentioned in the subject, I get the following error:

debugger invoked on a SB-PCL::FIND-METHOD-LENGTH-MISMATCH in thread #<THREAD "initial thread" {90033E9}>: The generic function #<STANDARD-GENERIC-FUNCTION STREAM-READ-SEQUENCE (2)> takes 2 required arguments; was asked to find a method with specializers (#<STANDARD-CLASS OCTET-INPUT-STREAM> #<BUILT-IN-CLASS T> #<BUILT-IN-CLASS T> #<BUILT-IN-CLASS T>)

Can someone tell me why this won't load?