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
groupIndex--;
				}
			}
			if ( pageBreakInterval > 0 )
			{
				if ( ( rsetCursor + 1 ) % pageBreakInterval == 0 )
				{
					needPageBreak = true;
				}
			}
			if ( rset.getEndingGroupLevel( ) == 0 )
			{
				
				
				
				startTOCEntry( null );
				accessFooter( listing, outputEmitter, rsIterator );
				finishTOCEntry( );
			}
		} while ( rset.next( ) );
	}
	/**
	 * create the group header
	 * 
	 * @param list
	 *            listing design
	 * @param index
	 *            group index.
	 * @param emitter
	 *            output emitter