hibernatetools & jboss.tools.common plugins together write exceptions to Error Log when I first time open "Hibernate Configuration 3.0 XML Editor"

I'd like to get "Hibernate Configuration 3.0 XML Editor" in my workspace, I import all jboss.tools.common plugins and get exceptions - I find the reason - telling it shortly - I should import almost all jbosstools plugins into my workspace - so I'll report about the problem as a bug - this is nothing - just about 10 error messages in Error Log - but as a user if I try to use separated hibernatetools - I do not want to see error massages about - org.jboss.tools.jsf.jsfnature - if I wan't to use jsf at all... Also the reason of the problem - in my workspace I have several projects - one of them - SeamTestPrj - has jsfnature - but other project ZZ has no - I try to open hibernate.cfg.xml from ZZ project and get exceptions:

1)
Model feature org.jboss.tools.common.meta.impl.adapters.XAdapterProjectsRoot is not registered with extension point org.jboss.tools.common.model.classes

java.lang.Exception: Model feature org.jboss.tools.common.meta.impl.adapters.XAdapterProjectsRoot is not registered with extension point org.jboss.tools.common.model.classes
at org.jboss.tools.common.model.util.ModelFeatureFactory.createFeatureInstance(ModelFeatureFactory.java:83)
at org.jboss.tools.common.meta.impl.AdapterHolder.doGetAdapter(XAttributeImpl.java:236)
at org.jboss.tools.common.meta.impl.AdapterHolder.getAdapter(XAttributeImpl.java:220)
at org.jboss.tools.common.meta.impl.XAttributeImpl.getAdapter(XAttributeImpl.java:179)

2)
Model feature org.jboss.tools.jst.web.tld.model.handlers.JSPAdopt is not registered with extension point org.jboss.tools.common.model.classes

java.lang.Exception: Model feature org.jboss.tools.jst.web.tld.model.handlers.JSPAdopt is not registered with extension point org.jboss.tools.common.model.classes
at org.jboss.tools.common.model.util.ModelFeatureFactory.createFeatureInstance(ModelFeatureFactory.java:83)
at org.jboss.tools.common.model.ui.dnd.ControlDragDrop.<clinit>(ControlDragDrop.java:32)
at org.jboss.tools.common.model.ui.outline.XModelObjectContentOutlineProvider.<init>(XModelObjectContentOutlineProvider.java:35)
at org.jboss.tools.common.editor.ObjectMultiPageEditor.<init>(ObjectMultiPageEditor.java:80)

3)
Model feature org.jboss.tools.jst.web.project.FileSystemsRenameListenerContribution is not registered with extension point org.jboss.tools.common.model.classes

java.lang.Exception: Model feature org.jboss.tools.jst.web.project.FileSystemsRenameListenerContribution is not registered with extension point org.jboss.tools.common.model.classes
at org.jboss.tools.common.model.util.ModelFeatureFactory.createFeatureInstance(ModelFeatureFactory.java:83)
at org.jboss.tools.common.model.filesystems.impl.FileSystemsRenameListener.<clinit>(FileSystemsRenameListener.java:27)
at org.jboss.tools.common.model.filesystems.impl.FileSystemsImpl.<init>(FileSystemsImpl.java:33)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

4-14)
Missing project nature extension for org.jboss.tools.jsf.jsfnature.

org.eclipse.core.internal.resources.ResourceException: Missing project nature extension for org.jboss.tools.jsf.jsfnature.
at org.eclipse.core.internal.resources.NatureManager.createNature(NatureManager.java:214)
at org.eclipse.core.internal.resources.Project.getNature(Project.java:378)
at org.jboss.tools.common.model.util.EclipseResourceUtil.getModelNature(EclipseResourceUtil.java:207)
at org.jboss.tools.common.model.util.EclipseResourceUtil.getObjectByResource(EclipseResourceUtil.java:91)
at org.jboss.tools.common.model.markers.XMarkerManager.reload(XMarkerManager.java:61)
at org.jboss.tools.common.model.markers.XMarkerManager.reload(XMarkerManager.java:53)
at org.jboss.tools.common.model.markers.XMarkerManager.<init>(XMarkerManager.java:37)
at org.jboss.tools.common.model.markers.XMarkerManager.getInstance(XMarkerManager.java:28)
at org.jboss.tools.common.model.ui.navigator.LabelDecoratorImpl.getErrorState(LabelDecoratorImpl.java:71)
at org.jboss.tools.common.model.ui.navigator.LabelDecoratorImpl.decorateImage(LabelDecoratorImpl.java:40)