#28 Symbol "WITHOUT-PACKAGE-LOCKS" not found in the EXTENSIONS

[Anonymous]

Python 1.1, target Intel x86
CLOS 18e (based on PCL September 16 92 PCL (f))

(asdf:operate 'asdf:load-op :acl-compat)

Reader error at 3146 on #<stream for="" file="" "="" home="" lisp="" src="" paserve="" portableaserve="" acl-compat="" acl-compat.asd"="">:
Symbol "WITHOUT-PACKAGE-LOCKS" not found in the
EXTENSIONS package.</stream>

[Nobody/Anonymous]

Logged In: NO

seems like simply removing the WITHOUT-PACKAGE-LOCKS
resolves the problem