If you do a build on any of the BPEL blueprints, you will see this warning.

"Warning: C:\Documents and Settings\soa\BluePrint3\BluePrint3\retrieved not found."

I have found cause of this problem:

It seems the Blueprints were packaged at a different phase than other samples. 

The key point is that the Blueprint samples are missing conditional logic to
check for existance of "retrieved" directory. Instead it is looking for
retrieved directory and warning that it does not exist. Other build_impl.xml
have this test:

  <target name="PackageRetrievedFiles" if="retrieved.exists">
        <copy todir="${build.dir}/META-INF" preservelastmodified="true"
failonerror="false">
            <fileset dir="${src.dir}/../retrieved"/>
        </copy>
    </target>


Here is diff b/t build_impl.xml in SynchrousSample vs Blueprint1.
The syncsample is 7 lines longer because of additional conditional logic.

*** build-impl.xml
--- build-impl.xml
***************
*** 46,51 ****
--- 46,52 ----
          <condition property="no.javadoc.preview">
              <isfalse value="${javadoc.preview}"/>
          </condition>
+         <available file="${src.dir}/../retrieved" property="retrieved.exists"/>
      </target>
      <target name="post-init">
          <!-- Empty placeholder for easier customization. -->
***************
*** 72,77 ****
--- 73,79 ----
              <pathelement
location="${netbeans.home}/../xmltools1/modules/org-netbeans-modules-xml-wsdl-extensions.jar"/>
              <pathelement
location="${netbeans.home}/../ide7/modules/org-apache-xml-resolver.jar"/>
              <pathelement
location="${netbeans.home}/../ide7/modules/org-netbeans-modules-xml-retriever.jar"/>
+             <pathelement
location="${netbeans.home}/../ide7/modules/ext/resolver-1_1_nb.jar"/>
          </path>
          <path id="ant.task.classpath.validation">
              <pathelement
location="${netbeans.home}/../soa1/modules/org-netbeans-modules-bpel-core.jar"/>
***************
*** 88,93 ****
--- 90,96 ----
              <pathelement
location="${netbeans.home}/../xmltools1/modules/ext/jxpath/jxpath1.1.jar"/>
              <pathelement
location="${netbeans.home}/../ide7/modules/org-apache-xml-resolver.jar"/>
              <pathelement
location="${netbeans.home}/../ide7/modules/org-netbeans-modules-xml-retriever.jar"/>
+             <pathelement
location="${netbeans.home}/../ide7/modules/ext/resolver-1_1_nb.jar"/>
          </path>
          <taskdef name="generate-jbi-descriptors"
classname="org.netbeans.modules.bpel.project.anttasks.GenerateJBIDescriptorTask">
              <classpath refid="ant.task.classpath.models"/>
***************
*** 149,171 ****
          <!-- You can override this target in the ../build.xml file. -->
          <mkdir dir="${build.dir}"/>
          <!-- run the validation task here. -->
!         <validate-project buildDirectory="${basedir}/${build.dir}"
sourceDirectory="${basedir}/${src.dir}" projectClassPath="${javac.classpath}"
buildDependentProjectDir="${basedir}/${build.dir}/dependentProjectFiles"
classpathRef="ant.task.classpath.validation" runValidation="${validation.flag}"/>
          <!-- copy all files from project source directory to build directory. -->
          <copy todir="${build.dir}" preservelastmodified="true">
              <fileset includes="**/*.bpel,**/*.wsdl,**/*.xsd" dir="${src.dir}"/>
          </copy>
!         <copy todir="${build.dir}/META-INF" preservelastmodified="true"
failonerror="false">
!             <fileset dir="${src.dir}/../retrieved"/>
!         </copy>
          <!-- generate portmap.xml in build directory. -->
          <generate-jbi-descriptors buildDirectory="${basedir}/${build.dir}"
sourceDirectory="${basedir}/${src.dir}" projectClassPath="${javac.classpath}"
classpathRef="ant.task.classpath.models"/>
          <!-- extract wsdl/xsd files from dependent projects and copy to
build/dependentProjectFiles. -->
          <delete dir="${build.dir}/dependentProjectFiles"/>
          <mkdir dir="${build.dir}/dependentProjectFiles"/>
      </target>
      <target name="dist_se" depends="init,pre-dist">
          <jar compress="${jar.compress}" jarfile="${build.dir}/SEDeployment.jar">
--- 152,174 ----
          <!-- You can override this target in the ../build.xml file. -->
          <mkdir dir="${build.dir}"/>
          <!-- run the validation task here. -->
!         <validate-project buildDirectory="${basedir}/${build.dir}"
sourceDirectory="${basedir}/${src.dir}" projectClassPath="${javac.classpath}"
buildDependentProjectDir="${basedir}/${build.dir}/dependentProjectFiles"
classpathRef="ant.task.classpath.validation"
allowBuildWithError="${allow.build.with.error}"/>
          <!-- copy all files from project source directory to build directory. -->
          <copy todir="${build.dir}" preservelastmodified="true">
              <fileset includes="**/*.bpel,**/*.wsdl,**/*.xsd" dir="${src.dir}"/>
          </copy>
!         <antcall target="PackageRetrievedFiles" inheritAll="true"/>
          <!-- generate portmap.xml in build directory. -->
          <generate-jbi-descriptors buildDirectory="${basedir}/${build.dir}"
sourceDirectory="${basedir}/${src.dir}" projectClassPath="${javac.classpath}"
classpathRef="ant.task.classpath.models"/>
          <!-- extract wsdl/xsd files from dependent projects and copy to
build/dependentProjectFiles. -->
          <delete dir="${build.dir}/dependentProjectFiles"/>
          <mkdir dir="${build.dir}/dependentProjectFiles"/>
      </target>
+     <target name="PackageRetrievedFiles" if="retrieved.exists">
+         <copy todir="${build.dir}/META-INF" preservelastmodified="true"
failonerror="false">
+             <fileset dir="${src.dir}/../retrieved"/>
+         </copy>
+     </target>
      <target name="dist_se" depends="init,pre-dist">
          <jar compress="${jar.compress}" jarfile="${build.dir}/SEDeployment.jar">
              <fileset includes="**/*.bpel,**/*.wsdl,**/*.xsd"
dir="${basedir}/${build.dir}"/>