Hi,
With the proliferation of new menu systems, we will not be able to investigate every menu and add support for it, without the need of either the community or the skin developers themselves. Most of these menus are specific to a particular vendor and to some extend, it is the responsibility of this provider to deal with the limitations of not using a standard DNN menu, We will review and include any instructions and code in our builds. When the home made menus are designed properly, that is, using NavObjectBase and supporting a Scope property, support is really easy to implement. But we do not have time anymore to reverse engineer every menu and provide support.
As for your language detection error, you'll have to be more specific or provide with admin login to your website so we can investigate. I don't understand what you mean by " I always detect Homepage and some other pages as language pack"