[cxml-devel] the missing-dependency instantiation is invalid

good morning; with the current cxml source and asdf @1.502, the :version keyword causes an error[1]. to wit: ? (asdf:find-system "cxml" nil) ;Loading #P"/Development/Source/production/Library/asdf-registry/ cxml.asd"...

Error: :VERSION is an invalid initarg to INITIALIZE-INSTANCE for #<STANDARD-CLASS MISSING-DEPENDENCY>. Valid initargs: (:REQUIRES :PARENT :REQUIRED-BY). While executing: CCL::CHECK-INITARGS, in process Listener(6). Type :POP to abort, :R for a list of available restarts. Type :? for other options. 1 >

either the keyword or the type must change. ------- [1]: http://repo.or.cz/w/cxml.git/blob/ 401d6e4e5d82ef880a02aed1f9226aa6dbc565c8:/cxml.asd#l15