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In the NB trunk: Warning - could not install some modules: J2EE Server Registry - The module named com.sun.tools.j2ee.editor/1 was needed and not found. The module is named org.netbeans.libs.j2eeeditor/1, not com.sun.tools.j2ee.editor/1.
Name change in manifest.mf to org.netbeans.libs.j2eeeditor/1 committed in trunk.
I guess this one is fixed (j2eeserver/manifest.mf rev.1.20). Please update the bug report next time.