Here is part of my web.config file...

  <appSettings>
  
	<!-- Specifies the database key for application security tables
	This key doesn't need to be specified if there is only one
	database in your application specified in the <databases> element
	-->
	<!-- <add key="SecurityDatabaseKey" value="" /> -->
	
	<!-- Specifies the database key for application messages
	This key doesn't need to be specified if there is only one
	database in your application specified in the <databases> element
	-->
	<add key="MessageDatabaseKey" value=""/>
	
	<!-- If set to false, indicates the application is not localized,
	and uses hard-coded strings for displaying messages and
	for user interface text. If true, specifies the application uses
	mmMessageMgr to data-drive application text.
	-->
	<add key="LocalizeApp" value="false"/>
	
    <add key="SecurityDatabaseSetKey" value="WaitList1"/>
    <add key="SecurityDatabaseKey" value="WaitList"/>
	<add key="DatabaseSetDefault" value="WaitList1"/>
    <add key="SecurityEnabled" value="false"/>
    <add key="DefaultLanguage" value="1" />;
  </appSettings>

I have set LocalizeApp to false and added the DefaultLanguage key. It does not like the new DefaultLanguage key.