CHANGE-CLASS Error in SBCL 1.0

Compiling or loading clg in SBCL, I get the following error:

debugger invoked on a SB-PCL::METAOBJECT-INITIALIZATION-VIOLATION in
thread #<THREAD "initial thread" {B29C2D1}>:
  Cannot CHANGE-CLASS objects into CLASS metaobjects.
See also:
  AMOP, Initialization of Class Metaobjects

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

restarts (invokable by number or by possibly-abbreviated name):
  0: [RETRY ] Retry performing #<ASDF:LOAD-OP NIL {B2409C1}> on
              #<ASDF:CL-SOURCE-FILE "gtktypes" {ADF1491}>.
  1: [ACCEPT] Continue, treating #<ASDF:LOAD-OP NIL {B2409C1}> on
              #<ASDF:CL-SOURCE-FILE "gtktypes" {ADF1491}> as having been
              successful.
  2: [ABORT ] Exit debugger, returning to top level.

If I choose restart 1, it loads just fine.  This happens in SLIME, but
also when running SBCL at the command line.  I have the latest CVS clg.

-- 
Robert Uhl <http://public.xdi.org/=ruhl>
A democracy cannot exist as a permanent form of government.  It can only
exist until a majority of voters discover that they can vote themselves
largess out of the public treasury.
               --Alexander Tyler, eighteenth-century Scottish historian


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