Classifieds Langauge Forum broke in The Mod Corner

[Big-Gaz]

When I try and access: Classifieds Languages in The Mod Corner I get the below error.

vBulletin Message
Invalid Forum specified. If you followed a valid link, please notify the administrator

URL is: http://www.photopost.com/forum/languages/
But if I change it to the following it works: http://www.photopost.com/forum/classifieds-languages/

Thought I should let you know.

[Chuck S]

I dont know how you get that link if I click the forum it uses this link

Languages - PhotoPost Community

[Big-Gaz]

I am click on the link in:
http://www.photopost.com/forum/photo...ds-mod-corner/

The sub-forum links on the forum index works.

Screenshot

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[Chuck S]

Thanks yeah that really seemed to be a VBSEO issue but I think I got it.