java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at com.springsource.sts.roo.ui.internal.actions.OpenRooShellForProjectsAction$RooProjectLabelProvider.decorateText(OpenRooShellForProjectsAction.java:115)
at org.eclipse.ui.model.WorkbenchLabelProvider.getText(WorkbenchLabelProvider.java:191)
at org.eclipse.jface.viewers.DecoratingLabelProvider.getText(DecoratingLabelProvider.java:129)
at org.eclipse.jface.viewers.DecoratingLabelProvider.updateLabel(DecoratingLabelProvider.java:351)
at org.eclipse.jface.viewers.WrappedViewerLabelProvider.update(WrappedViewerLabelProvider.java:183)

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