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/ExtensionManager.java
{
	/**
	 * Don't allow to instantiate.
	 */
	private ExtensionManager( )
	{
	}
	/**
	 * Initializes all extensions that Model supports.
	 * 
	 * @throws MetaDataParserException
	 *             if any error encountered when loading extension.
	 */
	public static void initialize( ) throws MetaDataParserException
	{
		
		assert !MetaDataDictionary.getInstance( ).isEmpty( );
		
		new PeerExtensionLoader( ).load( );
		new EncryptionHelperExtensionLoader( ).load( );		
	}
}