I'm on a team developing an Eclipse RCP application, and I'm
        wanting to include the Eclipse Marketplace Client.  
      I'm receiving this error when I try to use the marketplace
        client in my RCP application.
      Here's the target file I'm using when I get the error in my
        RCP application.
      
        <?xml version="1.0" encoding="UTF-8"
          standalone="no"?>
        <?pde version="3.6"?>
        
        
        <target name="prometheusui" sequenceNumber="14">
        <locations>
        <location includeAllPlatforms="false"
          includeMode="planner" includeSource="true"
          type="InstallableUnit">
        <unit id="org.eclipse.help.feature.group"
          version="1.3.0.v20110327-7i7uFFiFFt6ZqnbOrMXLd1"/>
        <unit id="org.eclipse.sdk.ide"
          version="3.7.0.I20110613-1736"/>
        <unit id="org.eclipse.epp.mpc.feature.group"
          version="1.1.0.I20110525-0742"/>
        
        </location>
        </locations>
        <includeBundles>
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          id="org.eclipse.equinox.p2.garbagecollector"/>
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          id="org.eclipse.equinox.launcher.win32.win32.x86"/>
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          id="org.eclipse.equinox.p2.discovery.compatibility"/>
        <plugin id="org.eclipse.equinox.p2.repository"/>
        <plugin
          id="org.eclipse.equinox.simpleconfigurator.manipulator"/>
        <plugin
          id="org.eclipse.equinox.p2.touchpoint.natives"/>
        <plugin id="org.eclipse.jdt.apt.core"/>
        <plugin id="org.eclipse.ui.editors"/>
        <plugin id="org.mortbay.jetty.server"/>
        <plugin id="org.eclipse.ui.intro.universal"/>
        <plugin id="org.eclipse.core.variables"/>
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          id="org.eclipse.equinox.jsp.jasper.registry"/>
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        <plugin id="org.eclipse.ecf.provider.filetransfer"/>
        <plugin id="org.eclipse.equinox.p2.ql"/>
        
          <plugin id="org.eclipse.jface"/>
        <plugin id="org.eclipse.platform"/>
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        <plugin id="org.apache.commons.httpclient"/>
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        <plugin id="org.eclipse.ui.console"/>
        <plugin id="org.apache.lucene.queries"/>
        <plugin id="org.eclipse.ecf.ssl"/>
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        <plugin id="org.eclipse.equinox.p2.operations"/>
        <plugin id="org.eclipse.search"/>
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        <plugin id="org.eclipse.equinox.common"/>
        <plugin id="org.objectweb.asm"/>
        <plugin id="org.eclipse.ant.launching"/>
        <plugin id="org.eclipse.ui.presentations.r21"/>
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        <plugin id="org.eclipse.equinox.p2.transport.ecf"/>
        <plugin id="org.eclipse.jdt.junit4.runtime"/>
        <plugin id="org.eclipse.pde.ua.ui"/>
        <plugin id="org.eclipse.ui.intro"/>
        <plugin id="org.mortbay.jetty.util"/>
        <plugin id="org.eclipse.jdt.junit.core"/>
        <plugin id="org.eclipse.jdt.compiler.apt"/>
        <plugin id="org.eclipse.compare.core"/>
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          id="org.eclipse.equinox.p2.publisher.eclipse"/>
        <plugin id="org.eclipse.equinox.jsp.jasper"/>
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        <plugin id="org.eclipse.team.cvs.ui"/>
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        <plugin id="org.eclipse.jdt.apt.pluggable.core"/>
        
          <plugin id="org.eclipse.pde.ua.core"/>
        <plugin id="org.eclipse.core.filesystem"/>
        <plugin id="org.eclipse.ui.views"/>
        <plugin id="org.eclipse.platform.doc.user"/>
        <plugin
          id="org.eclipse.equinox.p2.directorywatcher"/>
        <plugin
          id="org.eclipse.core.runtime.compatibility.registry"/>
        <plugin
          id="org.eclipse.core.runtime.compatibility.auth"/>
        <plugin id="org.eclipse.pde.api.tools.ui"/>
        <plugin id="org.eclipse.equinox.p2.core"/>
        <plugin id="javax.servlet.jsp"/>
        <plugin id="org.apache.commons.el"/>
        <plugin id="org.eclipse.rcp"/>
        <plugin id="org.eclipse.ui.views.properties.tabbed"/>
        <plugin
          id="org.eclipse.equinox.p2.metadata.repository"/>
        <plugin id="com.jcraft.jsch"/>
        <plugin id="org.eclipse.compare.win32"/>
        <plugin id="org.eclipse.cvs"/>
        <plugin id="org.eclipse.core.commands"/>
        <plugin id="org.eclipse.equinox.preferences"/>
        <plugin id="org.eclipse.help.webapp"/>
        <plugin id="org.eclipse.equinox.p2.ui.discovery"/>
        <plugin id="org.eclipse.equinox.p2.console"/>
        <plugin id="org.eclipse.osgi"/>
        <plugin id="org.eclipse.ltk.core.refactoring"/>
        <plugin id="org.eclipse.pde.api.tools"/>
        <plugin id="org.eclipse.team.core"/>
        <plugin id="org.eclipse.core.filebuffers"/>
        <plugin id="org.eclipse.epp.mpc.ui"/>
        <plugin id="org.eclipse.ui"/>
        <plugin id="org.apache.lucene"/>
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        <plugin id="org.eclipse.update.scheduler"/>
        <plugin id="org.sat4j.pb"/>
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        <plugin id="org.eclipse.debug.core"/>
        <plugin id="org.eclipse.equinox.http.servlet"/>
        <plugin id="org.eclipse.equinox.http.jetty"/>
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        <plugin id="org.eclipse.equinox.security"/>
        <plugin
          id="org.eclipse.equinox.p2.touchpoint.eclipse"/>
        
          <plugin id="org.eclipse.jdt.ui"/>
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        <plugin
          id="org.eclipse.equinox.p2.repository.tools"/>
        <plugin id="org.eclipse.ui.views.log"/>
        <plugin id="org.eclipse.ui.win32"/>
        <plugin id="org.apache.ant"/>
        
        <plugin id="org.eclipse.ui.cheatsheets"/>
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          id="org.eclipse.equinox.p2.ui.sdk.scheduler"/>
        <plugin id="org.eclipse.core.contenttype"/>
        <plugin id="org.eclipse.team.cvs.core"/>
        </includeBundles>
        </target>