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
{
				accessDetail( listing, outputEmitter, rsIterator );
			}
			finishGroupTOCEntry( );
			int endGroup = rset.getEndingGroupLevel( );
			if ( endGroup != NONE_GROUP )
			{
				
				
				
				
				endGroup = endGroup - 1;
				if ( endGroup < 0 )
				{
					endGroup = 0;
				}
				if ( hideGroupStartIndex == -1 )
				{
					groupIndex = groupCount - 1;
				}
				else
				{
					groupIndex = hideGroupStartIndex - 1;
				}
				while ( groupIndex >= endGroup )
				{
					startTOCEntry( null ); 
					accessGroupFooter( listing, groupIndex, outputEmitter );
					finishTOCEntry( ); 
					finishGroupTOCEntry( );