Bug 134266 [Wizard] Page description not set if page message already set
Since page messages such as errors and warnings used to be displayed in the same widget as the page description, code was put in place in WizardDialog#updateDescriptionMessage() to avoid setting the page description if there was already a message. As of 3.2 M6 there is a separate widget for displaying error and warning messages and so the page description should always be set.
bundles/org.eclipse.jface/src/org/eclipse/jface/wizard/WizardDialog.java
}
            }
        });
    }
    /**
     * Creates the buttons for this dialog's button bar.
     * <p>
     * The <code>WizardDialog</code> implementation of this framework method
     * prevents the parent composite's columns from being made equal width in
     * order to remove the margin between the Back and Next buttons.
     * </p>
     *
     * @param parent the parent composite to contain the buttons
     */
    protected void createButtonsForButtonBar(Composite parent) {
        ((GridLayout) parent.getLayout()).makeColumnsEqualWidth = false;
        if (wizard.isHelpAvailable()) {
            helpButton = createButton(parent, IDialogConstants.HELP_ID,
                    IDialogConstants.HELP_LABEL, false);
        }
        if (wizard.needsPreviousAndNextButtons()) {
			createPreviousAndNextButtons(parent);
		}
        finishButton = createButton(parent, IDialogConstants.FINISH_ID,
                IDialogConstants.FINISH_LABEL, true);
        cancelButton = createCancelButton(parent);
    }
    /**
     * Creates the Cancel button for this wizard dialog.
     * Creates a standard (<code>SWT.PUSH</code>) button and registers for its