Bug 315315 Warning messages seen while starting up workbench
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/util/PluginSettings.java
cex );
						}
					}
				}
			}
		}
		return null;
	}
	/**
	 * Attempts to walk through the schema tree as defined in an extension point
	 * schema and retrieve the attribute value associated with the value for a
	 * given element name.
	 * 
	 * @param sXsdListName
	 * @param sXsdComplexName
	 * @param sXsdElementName
	 * @param sXsdElementValue
	 * @param sLookupName
	 * @return XML attribute
	 * @throws ChartException
	 */
	private static final String getPluginXmlAttribute( String sXsdListName,
			String sXsdComplexName, String sXsdElementName,
			String sXsdElementValue, String sLookupName ) throws ChartException
	{
		final IExtensionRegistry ier = Platform.getExtensionRegistry( );
		final IExtensionPoint iep = ier.getExtensionPoint( PLUGIN, sXsdListName );
		if ( iep == null )
		{
			throw new ChartException( ChartEnginePlugin.ID,