Bug 213981 [Automation] [Regression] Exception is thrown out when preview the attached report design [07]
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/internal/document/v4/ExtendedItemExecutor.java
/*
					 * increase the unique id
					 */
					generateUniqueID( );
					content = reader.loadContent( offset );
					content.setGenerateBy( design );
					
					instanceId = content.getInstanceID( );
					IContent pContent = getParentContent( );
					if ( pContent != null )
					{
						content.setParent( pContent );
						instanceId = new InstanceID( pContent.getInstanceID( ),
								instanceId.getUniqueID( ), instanceId
										.getComponentID( ), instanceId
										.getDataID( ) );
						content.setInstanceID( instanceId );
					}
					doExecute( );
				}
			}
			catch ( Exception ex )
			{
				logger.log( Level.WARNING, ex.getMessage( ), ex );
				context.addException( this.getDesign( ), new EngineException(
						ex.getLocalizedMessage( ), ex ) );
			}
		}
		return content;
	}