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I have a problem with the "Forums hierachy".
If I create a new forum, i can see the subforum twice.
One entry is on the correct position and the second
entry is on the main-forum page.
(pic: Advanced1 & Advanced2)
If I deactivate the advanced forum, I see the forum hierachy correctly.
What's my mistake? What must I do, that the forum hierachy shows correctly?
PS: I use Drupal Version 7.23