Bug 142104 Cannot place data set field on master page
Bugzilla 122419 says this is fixed. I am using RC2, and I can't insert a data set field in the master page header or footer.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dnd/InsertInLayoutUtil.java
}
	/**
	 * Validates drop target from data set in data view.
	 * 
	 * @return validate result
	 */
	protected static boolean handleValidateDataSet( EditPart target )
	{
		return handleValidateDataSetDropContainer( target )
				&& DNDUtil.handleValidateTargetCanContainType( target.getModel( ),
						ReportDesignConstants.TABLE_ITEM );
	}
	/**
	 * Validates drop target from data set column in data view.
	 * 
	 * @return validate result
	 */
	protected static boolean handleValidateDataSetColumn(
			ResultSetColumnHandle insertObj, EditPart target )
	{
		if ( handleValidateDataSetColumnDropContainer( target )
				&& DNDUtil.handleValidateTargetCanContainType( target.getModel( ),
						ReportDesignConstants.DATA_ITEM ) )
		{
			
			if ( target.getModel( ) instanceof ModuleHandle )
			{
				return true;
			}