Workspace UUID missing from serialized change set file.

That's the TeamRepositoryException error message I get during a build when the build runs the workItemPublisher task in my -publish-changeset target as shown in the code excerpt below. I don't understand what could be wrong if the linkPublisher task works fine with the same buildResultUUID specification. (RTC 1.0.1)

<taskdef name="linkPublisher" classname="com.ibm.team.build.ant.task.LinkPublisherTask" />

<taskdef name="workItemPublisher" classname="com.ibm.team.build.ant.task.WorkItemPublisherTask" />



<target name="-publish-changeset" depends="-do-build-avail">

    <touch file="${curbuild.dist.dir}/changesets.txt"/>

    <workItemPublisher  repositoryAddress="${repositoryAddress}"

        userId="${ENGINE_ACCOUNT_ID}"

        passwordFile="${password.file}"

        buildResultUUID="${buildResultUUID}"

        filePath="${curbuild.dist.dir}/changesets.txt" 

    />

</target>

	

<target name="-make-link" depends="-do-build-avail">

    <linkPublisher repositoryAddress="${repositoryAddress}"

        userId="${ENGINE_ACCOUNT_ID}"

        passwordFile="${password.file}"

        buildResultUUID="${buildResultUUID}"

        url="http://mylink"

        label="linkname" 

    />

</target>