Bug 135790 ClassCastException in RowData.
ClassCastException is thrown in RowData line 81(IBaseExpression expr = ( IBaseExpression ) valueExpressions.get( index - 1 );).
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/executor/ListingElementExecutor.java
public Object visitRow( RowDesign row, Object value )
		{
			for ( int i = 0; i < row.getCellCount( ); i++ )
			{
				value = visitCell( row.getCell( i ), value );
			}
			return value;
		}
		public Object visitCell( CellDesign cell, Object value )
		{
			for ( int i = 0; i < cell.getContentCount( ); i++ )
			{
				value = cell.getContent( i ).accept( this, value );
			}
			return value;
		}
		public Object visitImageItem( ImageItemDesign image, Object value )
		{
			return value;
		}
		public Object visitExtendedItem( ExtendedItemDesign item, Object value )
		{
			return value;
		}
		public Object visitTemplate(TemplateDesign template, Object value)
		{
			return value;
		}
	}
}