i had the same thing happen too, luckily that link provided works fine
but i've noticed a few things not working since the renewal of the forum too
in your profile, if you try and edit anything, then none of the buttons are working, e:g Avatar-personal-social-settings-privacy- etc
plus when trying to add a new post, and add an attachment to it, nothing happens when the attachment button is clicked on, i dont know if this is just my connection or if anyone else is having the same things happen?
its probably some settings that need enabling in the new forums admin settings ?