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/parser/EngineIRVisitor.java
{
			value = StylePropertyMapping.getDefaultValue( name );
			nonInheritableReportStyle.setCssText( index, value == null
					? null
					: value.toString( ) );
		}
	}
	/**
	 * Creates Report default styles
	 */
	protected void createReportDefaultStyles( StyleHandle handle )
	{
		nonInheritableReportStyle = new StyleDeclaration( cssEngine );
		inheritableReportStyle = new StyleDeclaration( cssEngine );
		
		addReportDefaultPropertyValue( Style.BACKGROUND_COLOR_PROP, handle,
				true );
		addReportDefaultPropertyValue( Style.BACKGROUND_IMAGE_PROP, handle );
		addReportDefaultPropertyValue( Style.BACKGROUND_POSITION_X_PROP, handle );
		addReportDefaultPropertyValue( Style.BACKGROUND_POSITION_Y_PROP, handle );
		addReportDefaultPropertyValue( Style.BACKGROUND_REPEAT_PROP, handle );
		
		addReportDefaultPropertyValue( Style.TEXT_ALIGN_PROP, handle );
		addReportDefaultPropertyValue( Style.TEXT_INDENT_PROP, handle );
		addReportDefaultPropertyValue( Style.LETTER_SPACING_PROP, handle );
		addReportDefaultPropertyValue( Style.LINE_HEIGHT_PROP, handle );
		addReportDefaultPropertyValue( Style.ORPHANS_PROP, handle );
		addReportDefaultPropertyValue( Style.TEXT_TRANSFORM_PROP, handle );
		addReportDefaultPropertyValue( Style.VERTICAL_ALIGN_PROP, handle );
		addReportDefaultPropertyValue( Style.WHITE_SPACE_PROP, handle );