Bug 163018 An error extension will lead the report contain chart can't be opened and can not new a report.
Details: An error extension will lead the report contain chart can't open In org.eclipse.birt.report.tests.model has an error extension. When run the birt use workbenck, the report contain chart can't be opened and it can not new a report.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/metadata/ExtensionLoader.java
MetaDataParserException.DESIGN_EXCEPTION_EXTENSION_ERROR );
		}
		catch ( MetaDataException e )
		{
			logger.log( Level.SEVERE, e.getMessage( ) );
			MetaLogManager.log( "Extension loading error", e ); 
			throw new MetaDataParserException( e,
					MetaDataParserException.DESIGN_EXCEPTION_EXTENSION_ERROR );
		}
	}
	/**
	 * Logs the exceptions when extension pointers can't be found.
	 * 
	 * @param e
	 *            the extension exception.
	 */
	protected void logExtenstionException( ExtensionException e )
	{
		logger.log( Level.SEVERE, e.getMessage( ) );
		MetaLogManager.log( "Extension loading error", e ); 
	}
	/**
	 * Loads the extended elements in plug-ins, and add them into metadata
	 * dictionary.
	 * 
	 * @throws ExtensionException
	 *             if error is found when loading extension.
	 * @throws MetaDataException
	 *             if error encountered when adding the element to metadata
	 *             dictionary.