Can't edit my post?

[ectoBiologist15]

Post in question: https://hl2-beta.ru/index.php?topic=28319.0
It's annoying because it means I can't remove the "game crashes when NPCs finish walking" message (which has been fixed now) and can't add any extra maps to the post without making a brand new post. And if I have to make a brand new post, I'd rather like to delete the old one myself.